With the trade of Ichiro Suzuki and the announcement that first baseman Justin Smoak was being sent to Tacoma following Monday's game, the Mariners had two open spots in the 25-man roster.
Carp -- who manager Eric Wedge said would rejoin the team Tuesday -- is coming off his second stint on the DL for his right shoulder, which he initially hurt during the season opener in Japan diving for a ball in left field. Carp is hitting .157 with four home runs and 12 RBIs in 32 games with the Mariners this season, but he never fully recovered from the separated shoulder he suffered in Japan.
Wedge has said he will use Carp as a first baseman and designated hitter upon his return, limiting the stress on his shoulder by keeping him out of left field.
This is Robinson's second stint, and first of the season, with the Mariners since the team acquired him via trade last season. The 24-year-old is hitting .265 with nine home runs, 41 RBIs and 50 runs scored in 83 games for the Rainiers this season. Robinson has made starts in each outfield position this year.
Josh Liebeskind is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.