Robertson (hamstring) is on the 7-day DL at Triple-A Columbus. He left a spring game in late March wth a hamstring injury, and the issue is still lingering. At 31 years old, the journeyman offers very little fantasy intrigue.
Robertson left Tuesday's game with an apparent hamstring injury, Ryan Lewis of the Akron Beacon Journal reports. Robertson recorded his third hit of the day and it would have been a bases-clearing triple, but he pulled up on the basepaths. He then slammed his helmet in frustration, which suggests it could be a strain or perhaps worse. He wasn't in the running for an Opening Day roster spot, regardless.
Robertson was designated for assignment by the Mariners on Friday. In order to make room for Friday's starting pitcher against the A's, Seattle DFA'd Robertson in a corresponding move. Robertson spent two weeks with the Mariners in July, going 5-for-19 from the plate during nine games of action. The 30-year-old has had a decent season with Tacoma, but is seen as expendable by the organization.
Robertson was optioned to Triple-A Tacoma on Wednesday. Robertson was promoted just before the All-Star break and appeared in nine games, logging 19 at-bats and recording five hits, including one double. The 30-year-old will return to Triple-A, as the Mariners bring up veteran outfielder Nori Aoki in his place.
Robertson, in his second start since his callup earlier this week, doubled and hit a run-scoring single Thursday in a loss at Kansas City. The Mariners had been carrying 13 pitchers but wanted to get their position players more rest, so Robertson got the call. He played 107 games with the Angels in 2014-15. Robertson will get a start here and there to give outfielders rest, but probably won't get too many at-bats. If the Mariners choose to add another pitcher again or if Nori Aoki is recalled, Robertson likely will be sent to Triple-A over utilityman Shawn O'Malley, who plays infield and outfield.