Castro hit .211 in 337 at-bats with 11 homers, 31 RBI and 19 doubles for Houston in 2015. His biggest contributions were behind the dish, making one error in 103 games and throwing out 36 percent of stolen base attempts against him. The Astros earned the second AL wildcard spot, beating the Yankees 3-0 with Castro catching all nine innings. They were eliminated in the ALDS by the eventual World Series champion Kansas City Royals. 

Fuld hit .197 with 16 doubles, 22 RBI and two homers in 120 appearances for Oakland in 2015. His defensive play was outstanding, surrendering just four errors on the season while making several web gem-worthy plays in the outfield. 

Guthrie finished the season with a 5.95 ERA in 148.1 innings for Kansas City. The Royals avenged their loss against San Francisco in the 2014 Fall Classic, winning the World Series for the first time since 1985. 

Lowrie suffered through injuries in 2015, finishing with a .222 batting average with 30 RBI, nine homers and 14 doubles. He returned from the disabled list in August to help Houston make the playoffs with several clutch hits, helping the club defeat the New York Yankees in the AL Wildcard game. Houston was eventually eliminated by the Kansas City Royals in the ALDS. 

Mayberry struggled in 2015, batting .164 in 110 at-bats with 18 hits, six doubles, nine RBI and three home runs. The New York Mets reached the World Series, losing to the Kansas City Royals. 

With St. Louis plagued by injuries all year long, Piscotty’s debut on July 21 injected some much-needed energy and productivity into the lineup. In 63 games and 233 at-bats, Piscotty batted .305 with an .853 OPS, seven home runs, 39 RBI and 15 doubles. A scary injury near the end of the regular season cast a shadow over his status for the postseason, but he recovered to hit three home runs with six RBI in 16 playoff at-bats. 

Reed made his Major League debut for Miami after receiving his first call-up on Aug. 1. He made two appearances, throwing four innings and surrendering two runs. 

Storen was one of the National League’s most dominant closers in the first half of the season, but discord in the Washington Nationals' organization led to team-wide struggles. He finished the 2015 season with a 3.44 ERA in 58 appearances, saving 29 games and allowing 21 earned runs. The former Cardinal also had an impressive 67-16 strikeout-walk ratio.