Name: Jonathan Martinez, P
Age: 20 (6/27/1994)
Weight: 205 pounds
How acquired: Trade with Dodgers on July 28, 2014, for 2B Darwin Barney, as the player to be named later.
Great Lakes Loons, Midwest League, Low A (15 G, 7-5 3.47 ERA, 106.2 IP, 19 BB, 91K, 1-21 WHIP);
Kane County Cougars, Midwest League, Low A (5 G, 4-0, 2.31 ERA, 23.1 IP, 2 BB, 15 K, 1.03 WHIP)
Prior to Cubs
The Dodgers signed Martinez at the end of May in 2011 and the right-hander was on the mound a month later for his pro debut in the Dominican Summer League. The 17-year-old tasted success in his debut season, going 5-1 with a 1.67 ERA and 0.96 WHIP in 12 games, 32.1 innings. Martinez made his stateside debut in 2012, appearing in 12 games in the Arizona Rookie League and then getting two starts at Ogden in the Pioneer League. He threw 68 innings between the two stops with 68 K and a 1.34 WHIP, earning Arizona Rookie League All-Star honors. Martinez started 2013 in the Midwest League but after seven starts (1-2, 4.07 ERA) was sent back to Ogden. After six starts in the Pioneer League (3-1, 4.96 ERA, 32.2 IP) the Dodgers returned Martinez to Great Lakes, where he made eight more appearances (2-2, 3.19 ERA, 42.1 IP).
For the second straight season, Martinez started his year back in the Midwest League with Great Lakes. He established himself as the ace of the Loons staff, leading the team in wins (11), ERA (3.26), WHIP (1.18) and innings (129.2) despite being traded in July. The righty made 19 starts, earned MWL Pitcher of the Week honors in June, and went six or more innings in 11 outings. In his brief stint at Kane County, Martinez was impressive, winning four of his five starts and working at least five innings in each win. He threw 23.1 innings and the Cubs shut him down after reaching a career-high 130 innings.
Rule 5 eligible at the end of the season, Martinez will be in a battle for a starting rotation spot at Myrtle Beach but there’s a chance since he’s only 20, he starts his third straight year in the MWL. Martinez has a solid 6-foot-1 frame with a simple delivery that incorporates good leg drive and a slight fall off to the first base side. His best pitch is his change-up and his fastball sits in the high 80s-low 90s. He has good command of a plus slider and has no problem pitching to contact, despite a career 7.1 K/9.