Craig Kimbrel has been the mark against which other closers have been measured this season, and Koji Uehara is giving the Braves' thrower a run for his money. In 12 appearances for the Red Sox in June, Uehara has gone 2-0 with five saves in six opportunities, a 2.08 ERA, 0.62 WHIP and 12 K's in 13 innings. While he's has fewer chances to rack up saves in Boston (17 to Kimbrel's 26), Uehara's numbers compare favorably to our top closer.
Also on the rise is Oakland's Sean Doolittle, who has been a mark of consistency over the past two months, not giving up a run since imploding in Houston on April 26. Since then, he's tossed 23 unblemished appearances, notching 40 strikeouts compared to just five hits and a single walk. In that stretch, he's lowered his ERA from 6.17 to 1.95 and his WHIP 0.63 points to just 0.57 on the season.
Sergio Romo's rough time in San Francisco has seen him drop seven spots to 17th, giving Jean Machi, up 14 spots to 36th, some relevancy if he can start to steal opportunities from the incumbent reliever.