Adam Rosales was traded to the D-backs in July as the need for a versatile right-handed bat of the bench surfaced. For the second straight season, his strikeout rate was above 30 percent, but unlike 2016, Rosales struggled to draw walks. The power surge he experienced in 2016 with the Padres looks like an outlier compared to the rest of his career, and it's hard to imagine that he'll begin the season with anything more than a guaranteed bench role at the big-league level. If he finds his way back to another 25-man roster, Rosales' defensive versatility will likely be the driving factor, and he'd be unlikely to start more than occasionally against lefties if that opportunity materializes.
Rosales went 0-for-4 with two strikeouts in Tuesday's 6-2 loss to the Padres. With Jake Lamb batting just .146 in 123 at-bats against left-handed pitching this season, manager Torey Lovullo has been benching the All-Star more often versus southpaws in the second half, with Rosales emerging as Lamb's most common platoon partner. Rosales wasn't able to do much against Padres lefty Travis Wood on Tuesday, but it's unlikely to dissuade Lovullo from continuing to use the veteran utility man at third base on the occasions Lamb is rested.
Rosales started at first base and went 2-for-4 with a home run, two RBI and two runs in Monday's 13-0 win over the Dodgers. With a career .369 slugging percentage, Rosales certainly doesn't possess the kind of power most teams value from their first basemen, but for at least one day, he proved to be an adequate replacement for Paul Goldschmidt. Goldschmidt returned to Arizona to undergo an MRI on his right elbow. The Diamondbacks aren't expected to have a clear idea on the extent of Goldschmidt's injury until the results of the MRI are made available Tuesday, but if the All-Star ends up missing further time, Rosales would be among the top candidates to pick up extra at-bats. Along with Rosales, Daniel Descalso, Kris Negron and Chris Herrmann could also see time at first base.
Rosales went 1-for-4 with a solo home run in Wednesday's 6-4 win over the Dodgers. Jake Lamb received the day off with a left-handed pitcher (Hyun-Jin Ryu) on the mound for the Dodgers, so Rosales took his spot at third base and slotted second in the lineup. Rosales came through with just his sixth home run of the season, but it came with some controversy after the deep drive to the center-field wall was initially ruled a triple before umpires determined through video review that the ball had caromed off the wall just above the home-run line. Since Lamb will continue to see the bulk of the starts at third base until Ketel Marte (hamstring) is healthy again after a two-game absence, Rosales will probably only see a handful of starts the rest of the way as the Diamondbacks aim to solidify a wild-card berth.
Rosales started at second base and went 0-for-3 with two strikeouts during Wednesday's loss to the Dodgers. It was Rosales' fourth start with the Diamondbacks since being acquired July 31, but only his first in the last four games. The recent return of Ketel Marte from the bereavement list looks like it will relegate Rosales to utility duties in the Arizona infield, a role that he's probably best suited for given his meager bat. Rosales' .233/.272/.341 slash line on the season is roughly in line with his career marks in all three columns.
Rosales was traded to the Diamondbacks in exchange for minor-league pitcher Jeferson Mejia on Monday. The veteran infielder hasn't been great at the plate this season, as his slash line sits at just .234/.273/.346 in 71 games for the Athletics. However, Rosales' positional versatility intrigued the Diamondbacks' front office after Chris Owings (finger) was ruled out for a while and Ketel Marte (personal) landed on the bereavement list. Rosales will likely move into a reserve role upon his arrival in Phoenix, making him a relatively unattractive fantasy asset despite the hitter-friendly environment.