The Yankees ended this week with the third-best record in baseball at 58-29, and a major reason for their success this season has been the stellar performances they've received from their relievers.
New York entered Sunday boasting a 3.45 bullpen ERA, good for the second-best mark in the Majors behind only Houston. The Yankees leaned on their bullpen over the past week, and the relief unit was rewarded with MLB Bullpen of the Week presented by The Hartford honors.
As part of The Hartford Prevailing Moments program, each Monday throughout the 2018 season, MLB.com is honoring the MLB Bullpen of the Week presented by The Hartford. An industry-wide panel of MLB experts, including legendary stats guru Bill James, constructed a metric based on James' widely renowned game-score formula, to provide a weekly measurement of team-bullpen performance.
Here's how the Bullpen Rating System is compiled for each week. For reference, a weekly score of 100 is considered outstanding:
• Add 1.5 points for each out recorded
• Add 1.5 points for each strikeout
• Add 5 points for a save
• Subtract 2 points for each hit allowed
• Subtract 4 points for each earned run allowed
• Subtract 2 points for each unearned run allowed
• Subtract 1 point for each walk
• Subtract 5 points for a blown save
New York won the week with 103.5 points, totaling 86 outs, 27 strikeouts, 24 hits, seven runs (six earned), two walks and converting two save opportunities.
Albertin Chapman picked up his 24th save of the season on Tuesday, and Player Page for David Robertson converted his second save of 2018 with a perfect 10th inning on Sunday.
Chad Green and Dellin Betances each extended their scoreless-innings streaks to 16 1/3 and 17 1/3 innings, respectively.
The unexpected: With Betances, Green and Robertson all fatigued, Yankees manager Aaron Boone turned to Chasen Shreve, who had scuffled of late -- he posted a 7.64 ERA in May and June -- in the eighth inning on Tuesday against the Braves.
How they prevailed: Shreve escaped a two-on, one-out jam by striking out Ender Inciarte and retiring Ozzie Albies.
"We know he's capable of that when he's right," Boone said after the game. "That's a tough spot, coming in for Inciarte and Albies with the game on the line, tying run on, go-ahead run on, and to make pitches to some good hitters in that spot -- that was big. We've seen him do that before. Tonight we really needed him with a couple of guys down and he came through big for us."

The Yankees narrowly edged the Blue Jays, who posted a 102.5 score as the only other MLB club to reach triple digits last week. Toronto relievers recorded 90 outs, 27 strikeouts and two strikeouts while holding opponents to seven runs (six earned) on 24 hits and two walks.
Arizona made a late push with a 16-inning marathon against the Padres in which D-backs relievers covered 11 2/3 frames. But catcher Jeff Mathis -- who pitched the 16th after the D-backs used all seven of their relievers and Friday's starter Zack Godley -- took the loss after yielding a home run to William Myers, lowering Arizona's score to 97.