Need an impact arm or bat that can give your fantasy team a boost? Whether you're looking for an injury replacement or someone to stash on your bench, the fantasy waiver wire has a plug or long-term fix to pick up today. Check out the following 10 players -- all sitting on waivers in many leagues, and all ready to help your team in Yahoo Sports Fantasy Baseball, the Official Commissioner Game of MLB. All statistics and ownership percentages are as of Wednesday morning.
Andrew Miller, reliever, Indians (49% owned)
Miller was immediately thrust into action after being activated from the DL on Monday, tossing a scoreless inning against the Rays while striking out two. Although he's been limited to just 25 innings this year, Miller has continued to be effective with a 3.24 ERA, a 1.24 WHIP and a 12.6 K/9 rate. Look for the Indians to give their reliever a healthy dose of innings over the next few weeks to get him battle-ready for the playoffs.

Richard Parker, reliever, Angels (48% owned)
Parker has solidified himself as the Halos' primary closer by converting 14 of his 17 save opportunities and finishing 39 games this year. Overall, he has produced a 3.16 ERA with a 1.20 WHIP, a 9.5 K/9 rate and a 3.5 K/BB ratio over 62 2/3 innings. While not as dominant as he was last year, Parker remains a reliable late-game option capable of helping fantasy owners down the stretch.
Todd Frazier, third baseman, Mets (36% owned)
While a pair of trips to the disabled list has limited Frazier to just 98 games this year, he's continued to be a steady source of power with 17 home runs, 57 RBIs and a .188 ISO. He's been making more contact and hitting the ball harder than ever before, posting the lowest swinging-strike rate (8.5 percent) and the highest hard-hit rate (41.7 percent) of his career. The 32-year-old has been a factor on the bases as well, tallying nine steals in 11 attempts, and he could reach double-digit stolen bases for the fourth time in five years. Although his .224 average limits his fantasy value, Frazier is worth owning in deeper mixed leagues for his ability to provide some power and speed at the hot corner.
Kevin Kiermaier, outfielder, Rays (25% owned)
After batting just .192/.245/.283 with no home runs and four RBIs in August, Kiermaier has caught fire since the calendar flipped to September. The 28-year-old has hit safely in all seven of his games this month, tallying five multi-hit performances while hitting .520 with three homers and seven RBIs. While his overall numbers are disappointing, Kiermaier is finishing the season on a high note and remains a threat to reach double-digit steals and homers for the fourth consecutive year.

Reynaldo Lopez, starter, White Sox (24% owned)
Lopez has put up solid numbers in his first full season as a starter, registering a 4.22 ERA with a 1.31 WHIP and 132 strikeouts over 168 2/3 innings, and his arm has shown no signs of wearing down after 29 starts. Over his past four appearances, he has posted a 1.40 ERA and 29 strikeouts in 25 2/3 innings while limiting opponents to a .165/.240/.242 batting line. If he can sustain his recent surge in strikeouts, the 24-year-old could end the year with a few more dominant outings.
Jay Bruce, outfielder, Mets (22% owned)
Bruce missed more than two months with right hip soreness, lower back tightness and plantar fasciitis in his left foot, and the rest appears to have worked well for the veteran. In his first 15 games back, he's batted .271/.352/.521 with three homers and six RBIs. The 31-year-old slugger appears to be recovered from his multitude of injuries and is capable of providing a lift for fantasy owners in need of power.
Zach Davies, starter, Brewers (18% owned)
Davies missed more than three months with right rotator cuff inflammation but has looked good in two starts since returning to the Majors on Sept. 3. Though he's been limited to five innings each time, he's allowed just three earned runs on 10 hits while posting a 9-to-2 K/BB ratio. Davies hasn't thrown more than 85 pitches in a start since April 29, but it's possible the Brewers will start giving him a longer leash to help him build up his arm strength for the postseason.

Jeff McNeil, second baseman, Mets (17% owned)
McNeil has been sensational since making his MLB debut on July 24, batting .331/.392/.477 with 14 extra-base hits and four steals in 45 games. The 26-year-old appears to be making a smooth transition to the Majors after hitting .311/.380/.443 across six Minor League seasons, including an impressive .342/.411/.617 performance at Double-A and Triple-A this year. While his .358 BABIP may come down a bit, he's proven himself to be an elite contact hitter with an 8.9 percent strikeout rate, which ranks as the fifth lowest among batters with at least 150 plate appearances. With good speed and solid power to complement his high batting average, McNeil is quickly establishing himself as a fantasy asset at the keystone.
Scott Schebler, outfielder, Reds (13% owned)
It took Schebler a few games to get his timing back after missing six weeks with a shoulder injury, but he's looked like his old self at the plate over the past two weeks. In 12 games since Aug. 30, he's batting .349/.440/.698 with four homers and nine RBIs. He's been bumped up to the leadoff spot as a result, which should give him more run-scoring opportunities while hitting in front of Joey Votto, Scooter Gennett and Eugenio Suarez.

David Dahl, outfielder, Rockies (11% owned)
After missing all of 2017 with a rib injury, Dahl has posted a solid .273/.322/.514 batting line in 60 games this season. The 24-year-old has shown the ability to be an across-the-board contributor in 123 career games, recording 17 homers, 10 steals, 53 RBIs and 62 runs scored as well as a .296 average. He's also been swinging a hot bat lately, producing three homers, eight RBIs and a .350 batting mark over his past six games. As a result, the Rockies may continue to find regular playing time for Dahl over the next two weeks as they battle for a postseason spot.