The three St. Joseph Mustangs that were drafted last month are off to slow starts in their pro debuts.

Missouri Western's Grant Fink and Michael Schulze, and Rhode Island's Jeff Roy are all hovering the Mendoza Line following about a month of playing in affiliated ball.

Schulze, the the St. Louis Cardinals' 19th-round pick and MIAA Conference player of the year, is hitting .200 after seven games with the State College (Pa.) Spikes. Western's former shortstop has played in seven games as of Saturday, three coming at short and three more at designated hitter. The other game he was at third base.

Schulze has five hits -- four doubles -- and has driven in three runs.

Fink started out playing for the Arizona League Indians and has six hits in 33 at-bats after 10 games this year. A 23rd-round pick, Fink has three extra base hits but no RBIs.

His best game was a 2-for-5 night with a triple against the AZL Padres on June 27. The former Griffons third baseman has played nine of his 10 games at first base for the Indians' rookie league team.

Schulze and Fink both started this summer on the Mustangs before leaving the week following the MLB First-Year Player Draft.

Roy became the first draft pick out of Rhode Island since 2003 when the Pirates tabbed the former speedy Mustangs outfielder, who played here in 2011. Roy played in the prestigious Cape Cod League last summer.

Roy is hitting .229 after 14 games with the Jamestown Jammers, a short-season for the Pirates. Roy has stolen eight bases in 10 tries, coming off a season where he was the only Division I player to steal 30 or more bases without getting caught this spring.

Roy has 12 hits, scored 11 runs and has five RBIs, while playing all three outfield positions. Eight of his 14 starts has came in left field though.

The only other former Mustangs player in affiliated ball is Cory Segui, a 2012 member.

Segui, the son of former MLBer David Segui and grandson of Diego Segui -- a member of the Kansas City Athletics, Seattle Pilots and Washington Senators in the 1960s in a 15-year big-league career -- started the year with one game at Aberdeen before being sent down to the Gulf Coast Orioles.

A free-agent signing last year, Segui is hitting .235 in 17 games for the rookie-level Orioles team. In his most recent game, the first baseman was 1-for-2 with a double and 2 RBIs against the GCL Twins.

Cody Thorn can be reached at Follow him on Twitter: @SJNPSports.