• All-Star right-hander Hisashi Iwakuma will throw another bullpen session on Tuesday in Arlington, then a 45-pitch simulated game on Saturday in Miami as he works his way back from a sprained tendon in his right middle finger that wiped out his entire spring. If all goes well, Iwakuma will then be sent out on a Minor League rehab stint, most likely with Triple-A Tacoma, which means he's likely on track to join the Mariners sometime in early May.
• Right-handed reliever Tom Wilhelmsen appeared in just the first game of Seattle's just-completed five-game homestand due to a stiff back, but is healthy now and available to pitch as the club opens a seven-game road trip to Texas and Miami.
• Former Mariners utility man Mark McLemore is filling in on Seattle's radio crew for the next four days, as Dave Sims is taking the Rangers series off. McLemore will team with Aaron Goldsmith on radio on Monday and Tuesday, with Rick Rizzs and Mike Blowers handling the TV work. Then McLemore and Rizzs will do radio on Wednesday and Thursday, with Goldsmith and Blowers on TV.