Voting ends Friday for the second All-MLB Team presented by CohnReznick, and with no All-Star Game staged this year because of the coronavirus pandemic, All-MLB Team honors are the best way that the game can honor its best overall players at each position.

Fans can vote here until the polls close at 2 p.m. ET on Friday, and the All-MLB first and second teams will be announced in early December on MLB Network. The reliever portion of the ballot has plenty of worthy candidates, but the All-MLB first- and second-team lineups will only feature two apiece.

Below is a quick statistical primer for the 12 All-MLB Team candidates from the bullpen.

Nick Anderson, Rays
2020 stats: 6 SV, 0.55 ERA, 0.49 WHIP, 14.3 K/9
Anderson seemed to run out of steam in the postseason, but this is a regular-season award and Anderson’s regular-season dominance was the reason why Rays manager Kevin Cash turned to him so often in October. A former under-the-radar pickup at last year’s Trade Deadline, Anderson finished among the top five relievers this year in ERA, strikeout rate (44.8%), K-BB% (39.7%) and opponent average (.091).

The case for Anderson: Apart from a couple spare pitches classified as sinkers, Anderson threw just two pitch types (his four-seam fastball and his curveball) the entire season. But that predictability didn’t help opposing hitters, who hit just .097 (3-for-31) against Anderson’s heater and .083 (2-for-24) against his hook.

Key number: Anderson’s 0.49 WHIP (walks plus hits per inning) is the fourth lowest recorded by any pitcher in a single season (min. 15 innings) since 1900.

Alex Colomé, White Sox
2020 stats: 12 SV, 0.81 ERA, 0.94 WHIP, 6.5 K/9
Colomé held down the back end for one of baseball’s most exciting up-and-coming teams, posting career bests in ERA and WHIP while tying for fourth in MLB with 12 saves. He didn’t allow his first run until Aug. 22, his 10th appearance of the season.

The case for Colomé: The White Sox won 18 of their 21 games in which Colomé appeared en route to the franchise’s first postseason appearance in 12 years. Two of those losses occurred in extra innings after Colomé was already out of the game.

Key number: Colomé did not yield a single home run across his 22 1/3 innings pitched, the most frames tossed by any full-time reliever in 2020 without surrendering a single dinger.

Edwin Díaz, Mets
2020 stats: 6 SV, 1.75 ERA, 1.25 WHIP, 17.5 K/9
The Mets didn't make the postseason, but they will have the comfort of knowing that Díaz is seemingly back to the All-Star closer they traded for prior to 2019. The walks were still prevalent, but Díaz missed way more barrels and continued to pile up whiffs with his nasty fastball-slider combo.

The case for Díaz: Opponents missed on 48% of their swings against Díaz, an off-the-charts whiff rate that ranked second only to Brewers reliever Devin Williams out of more than 330 MLB pitchers (min. 150 opponent swings).

Key number: Díaz trimmed his ERA by basically an entire pitcher from his disastrous 2019 (5.59) to ‘20 (1.75), giving him the ninth-biggest improvement in ERA among more than 200 pitchers who threw at least 20 innings in both seasons.

Jake Diekman, Athletics
2020 stats: 0 SV, 0.42 ERA, 0.94 WHIP, 13.1 K/9
Diekman didn’t make a stellar first impression after he came over to Oakland from Kansas City at last year’s Trade Deadline, but he ascended to a linchpin of the A’s Major League-best bullpen in 2020. The southpaw didn’t allow his first run until the last week of the season (Sept. 23 against the World Series-champion Dodgers) and finished with baseball’s second-lowest ERA (min. 15 innings) behind the Crew's Devin Williams.

The case for Diekman: He and Williams were the only two pitchers in baseball who paired strikeout rates of at least 35% with a ground-ball rate of at least 60%. Diekman hardly gave up any contact, and he especially didn’t give up much contact in the air.

Key number: Diekman improved his slider in the most 2020 way imaginable -- he asked Twitter personality Rob Friedman, AKA @PitchingNinja, to show him the grip that Rays reliever Chaz Roe used to throw his boomerang slider. Within a couple outings with the new grip, Diekman was whipping the lefty version of Roe’s slider, increasing its average horizontal movement by nearly eight inches as compared to ‘19 (you can read more on that evolution in this story by MLB.com’s David Adler). Opponents mustered just five singles in 29 at-bats ending on Diekman’s new toy, striking out 13 times.

Brad Hand, Indians
2020 stats: 16 SV, 2.05 ERA, 0.77 WHIP, 11.9 K/9
Hand is a three-time All-Star reliever who just wrapped up his 10th big league season, but 2020 might rank among his most impressive. The southpaw piled up a Major League-most 16 saves while recording the lowest ERA, WHIP and FIP of his career, and paired 29 strikeouts with just four walks across 22 innings.

The case for Hand: Not only did Hand lead baseball in saves, he was a perfect 16-for-16 in save opportunities. The most saves compiled by any other pitcher who had a 100% success rate in save opportunities was eight, by Zack Britton and Rafael Montero.

Key number: Hand, a left-hander, had absolutely no trouble in the platoon disadvantage. Facing right-handed hitters in all but nine of his opponents’ plate appearances this year, Hand held those righties to a .174/.227/.275 slash line with zero home runs.

Liam Hendriks, Athletics
2020 stats: 14 SV, 1.78 ERA, 0.67 WHIP, 13.1 K/9
Hendriks was the heart of the A's bullpen as the rock-solid closer. The Australian right-hander blew his first save opportunity of the season on Opening Day (a game the A’s still won) and then didn’t falter again, finishing with a sub-2.00 ERA for the second consecutive year.

The case for Hendriks: He tied Devin Williams for the highest WAR total (1.4) among relievers, per FanGraphs’ version of the metric. The A’s won their division, while Williams’ Brewers just barely qualified as the NL’s No. 8 postseason seed.

Key number: Batters had a tough enough time with Hendriks’ high-velocity, high-spin fastball, as we saw in the postseason. But when he threw his offspeed pitches off that heat, it was nearly always game over for his opponents, who mustered only two singles in 27 at-bats (.074) against Hendriks’ slider and curveball and struck out 16 times against those pitches.

Greg Holland, Royals
2020 stats: 6 SV, 1.91 ERA, 0.95 WHIP, 9.9 K/9
Holland has been on a roller coaster with his performance in recent years, but 2020 was definitely a peak. The right-hander cut his walk rate by more than 9% from ‘19, helping him to post his lowest ERA and WHIP since he helped the Royals win the AL pennant in ‘14.

The case for Holland: He surrendered only one home run all season, giving him the third-lowest homer-per-nine-inning rate (0.32) among relievers with at least 25 innings pitched.

Key number: Holland threw his slider on more than half of his total pitches (51.3%), but he still held hitters to a .167 average, .217 slugging percentage and a 37% strikeout rate on his signature offering.

Jeremy Jeffress, Cubs
2020 stats: 8 SV, 1.54 ERA, 0.94 WHIP, 6.6 K/9
Jeffress went from first-time All-Star in 2018 to released by the Brewers in ‘19 to a vital arm in the Cubs’ bullpen in ‘20. Chicago went 19-3 in games in which Jeffress appeared en route to its NL Central division title.

The case for Jeffress: Chicago’s bullpen could have been a disaster when closer Craig Kimbrel struggled to begin 2020, but Jeffress was one of several relievers who stepped up to help right the ship. The Cubs ‘pen stabilized and finished with a 4.38 ERA, tied for 13th-best of the 30 MLB clubs.

Key number: Jeffress surrendered only two barrels (Statcast’s term for balls with the best combinations of exit velocity and launch angle for hitters) out of the 57 total balls put in play against him. That 3.5% barrel rate put him in the 91st percentile among qualified pitchers in 2020.

James Karinchak, Indians
2020 stats: 1 SV, 2.67 ERA, 1.11 WHIP, 17.7 K/9
Maybe you were skeptical that Karinchak could make his insane numbers from 2019 (55% strikeout rate across four levels, including five MLB appearances) hold up over a full season in the Majors. But the Indians’ real-life version of Rick “Wild Thing” Vaughn didn’t really show any difficulty with big league hitters, nearly carrying a sub-1.00 ERA into September and finishing with a 48.6% strikeout rate that ranked second only to Devin Williams.

The case for Karinchak: His 53 strikeouts tied Williams for the most among relievers, and he also surrendered just one homer across 27 innings.

Key number: What makes Karinchak so hard for hitters to square up, aside from the elite “rising” movement on his high-90s fastball, is his straight-over-the-top arm angle. He had both the seventh-highest average vertical release point and second-closest horizontal release point to the direct middle of the mound among right-handed pitchers who threw at least 100 pitches.

Drew Pomeranz, Padres
2020 stats: 4 SV, 1.45 ERA, 1.02 WHIP, 14.0 K/9
Pomeranz’s evolution from rocky starter to super-charged reliever continues to be a staggering one. He owns a 1.71 ERA since the Giants moved him to the bullpen on July 22, 2019.

The case for Pomeranz: He didn’t let the Padres’ bullpen completely collapse when All-Star closer Kirby Yates went down with injury in mid-August, blowing only one save (in his final regular-season appearance) after Yates was done for good.

Key number: Pomeranz’s .118 expected batting average against and 1.93 expected ERA (both Statcast metrics based on both the amount and quality of contact a pitcher allows) both ranked second behind Devin Williams among nearly 470 pitchers who faced at least 50 batters in 2020.

Trevor Rosenthal, Padres
2020 stats: 11 SV, 1.90 ERA, 0.85 WHIP, 14.5 K/9
Every out was a struggle for Rosenthal just one year ago, which makes his improvement in 2020 so stark. The flamethrowing right-hander put up career bests in ERA, WHIP, strikeout rate and K-BB%.

The case for Rosenthal: He was the headlining reliever moved at the Trade Deadline, and he did everything asked of him and more for the Padres. Rosenthal finished all nine games he pitched in a San Diego uniform (the Padres went 8-1 in those contests), allowing just one unearned run while striking out 17 hitters and walking just one.

Key number: Rosenthal finished in the 98th percentile or better among qualified pitchers in xwOBA, expected ERA, expected batting average, expected slugging, strikeout rate, whiff-per-swing rate and average fastball velocity.

Devin Williams, Brewers
2020 stats: 0 SV, 0.33 ERA, 0.63 WHIP, 17.7 K/9
Hurling the most dominant pitch of the season in his “Airbender” changeup, Williams came out of nowhere on a club that already had Josh Hader to become 2020’s most unhittable reliever and the NL Rookie of the Year. Pirates third baseman Colin Moran, who homered off Williams in the Brewers’ fourth game of the season, was the only man to score an earned run against the right-hander in 2020.

The case for Williams: Good luck making the case that Williams wasn’t one of the best relievers in baseball. Though Hader racked up the majority of the Brewers’ saves, Williams led the sport in ERA, strikeout rate (53%), K-BB% (44%), FIP (0.86) and Statcast’s xwOBA metric (.179) that measures both quality of contact and amount of contact allowed.

Key number: We mentioned that Williams’ changeup was MLB’s most dominant pitch, as hitters went just 2-for-62 against it for a .032 batting average. But that distinction goes beyond just this year; no specific pitch has yielded a lower opponent average (min. 50 AB) in any season since 2010, when hitters went 2-for-64 (.031) against Marlins reliever Jose Veras’ curveball.