Miami Marlins History: All-Time Top 10 K/9

4) Mike Dunn (9.80)

Mike Dunn was a 6’1″, 185 lb. left-hander from Las Vegas, NV. He was chosen by the Houston Astros in the 14th round back in 2003, but didn’t sign. The following season, the New York Yankees took him in the 33rd, and he accepted their offer.

Dunn made it up to the Yankees for four games in 2009, then wound up with the Atlanta Braves in 2010. After that season, the Braves sent him and Omar Infante to the Florida Marlins for Dan Uggla.

Dunn made the most of his situation, and in 2011 stayed in the major leagues for the entire season for the first time. As a Marlin, he was 5-6 with a 3.43 ERA and 68 K’s in 63 innings. His 1.30 WHIP had him pegged as just about a league average reliever.

In 2012 for the Miami Marlins, Dunn had what could be termed a down year. Opponents totaled an all-star worthy .806 OPS off of him. He kept striking guys out at a decent rate, with 47 in 44 frames, but his 1.773 WHIP would be his worst (until 2018).

Dunn rebounded for a pretty good year in 2013, going 3-4 with a 2.66 ERA in 75 games. He whittled his WHIP down to a career-best 1.197 mark, and slashed opponents to .212/.288/.316. He also struck out a career-best 72 batters in 67 2/3 innings.

In 2014, Dunn continued to be a workhorse for the Miami Marlins out of the pen, appearing in a team-high 75 games for the second season in a row. Opponents slashed .220/.303/.332, and collected 1.211 WHIP while Dunn whiffed 67 in 57 innings. He was 10-6 with a 3.16 ERA

Over the next two seasons, Dunn struck out another 103 in 96 1/3 innings, and went 8-6 with a 4.02 ERA. Despite his status as a relief pitcher, he ranks 19th on Miami’s all-time list with 26 victories.