Chicago White Sox RHP Michael Ynoa is one of two 2013 Midwest League pitchers who made his MLB debut Tuesday. (Photo by Kamil Krzaczynski/USA TODAY Sports)

Three former Midwest League players made their major-league debuts Tuesday.

Infielder Ryan Schimpf made his MLB debut for the San Diego Padres, playing third base and batting sixth against the Miami Marlins. He went 1-for-4 — he doubled in his first at-bat — and made an impressive barehanded defensive play late in the game.

Schimpf was a Toronto Blue Jays prospect when he played in the Midwest League. He batted .240 with 6 home runs, 10 triples, 23 doubles, 45 runs batted in, and 11 stolen bases in 92 games with the 2010 Lansing Lugnuts.

RHP Michael Ynoa threw two hitless innings for the Chicago White Sox in his MLB debut against the Detroit Tigers. He walked two and struck out two.

Ynoa was an Oakland Athletics prospect when he pitched in the Midwest League. He went 2-1 with a 2.14 ERA, 48 strikeouts and 18 walks in 54.2 innings (15 starts) for the 2013 Beloit Snappers.

RHP Zach Eflin made his MLB debut in a spot start for the Philadelphia Phillies. He lasted only 2.2 innings, giving up nine runs (eight earned) on nine hits (including three home runs) and three walks.

Eflin was a San Diego Padres prospect when he pitched in the Midwest League. He went 7-6 with a 2.73 ERA, 86 strikeouts and 31 walks in 118.2 innings (22 starts) for the 2013 Fort Wayne TinCaps.