Casilla joins the coaching staff after spending parts of nine seasons at the Major League level. Seven of those (2006-12) came with the Minnesota Twins, the first two of which he was teammates with Ford, while the final two (2013-14) were played with the Baltimore Orioles. In 578 MLB games, he compiled a .247 batting average with 12 home runs, 157 RBIs, 225 runs, 419 hits, 80 stolen bases and a .302 on-base percentage. He led the American League with 13 sacrifice bunts during the 2008 season and ranked second in stolen base percentage (95.46%) during the 2012 campaign. Defensively, the infielder posted a .977 career fielding percentage, spending time at second base, shortstop and third base.

The 39-year-old also played in the Los Angeles Angels (2004-05), Tampa Bay Rays (2015), Detroit Tigers (2015) and Toronto Blue Jays (2016) organizations, reaching the Triple-A level with each. He finished his career in the Atlantic League, playing three seasons (2017-19) with the York Revolution. In 202 games, the Dominican Republic native posted a .337 batting average with 10 homers, 79 RBIs, 139 runs, 269 hits, 46 doubles, five triples, 23 stolen bases and an .828 OPS. Casilla ranked third in the league in hits (142), fourth in batting (.336) and seventh in runs (75) while also being named to the Red, White and Blue All-Defensive Team at second base in 2018.