MLB: Top 5 relievers in the AL and NL Championship Series

David Robertson

David Robertson came up in the Yankees system and learned at Rivera’s knee, then jumped to the White Sox via free agency in 2015. The Yankees reacquired him along with fellow relief ace Tommy Kahnle and third baseman Todd Frazier before the trade deadline this past July. He’s excelled since his return to New York with a 1.03 ERA and 0.743 WHIP. He’s allowed only 14 hits in those 35 innings, good for a ridiculous 3.6 H/9.

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Robertson mostly features a cutter/curveball combination, but mixes in other breaking balls as well. The curve is his most dangerous offering, inducing a 26.6% whiff rate. That pitch earned him a third strike on 67 of his 98 strikeouts this season.

The addition of Robertson to the Yankee bullpen at the trade deadline is also a big reason why they are still alive in the postseason.