Matt Harrison has been diagnosed with hyperthyroidism.
Phillies placed LHP Matt Harrison on the 15-day disabled list with lower back inflammation.
Left-hander Matt Harrison was traded from the Rangers to the Phillies in the Cole Hamels trade.
Jon Morosi of FOX Sports reports that Matt Harrison is heading to the Phillies as part of package for Cole Hamels and Jake Diekman.
Matt Harrison surrendered six runs in six innings, taking the loss on Monday versus the Yankees.
Matt Harrison tossed six shutout innings against the Rockies on Tuesday to earn his first win of the season.
Matt Harrison will slot in the fifth spot in the Rangers rotation to begin the second half of the season.
Matt Harrison, making his 2015 season debut, struggled and lost after allowing six runs in four innings to the Diamondbacks on Wednesday.
Matt Harrison's season debut was moved to Wednesday against the Diamondbacks.
Rangers activated LHP Matt Harrison from the 60-day disabled list.
Matt Harrison (back) is expected to be activated to start Tuesday against the Diamondbacks.
Matt Harrison (back) said he's ready to return to the Rangers' starting rotation.
Matt Harrison (back) allowed five earned runs over six innings Wednesday at Double-A Frisco.
Matt Harrison allowed two runs on five hits over 6 2/3 innings in his latest minor league rehab start with Triple-A Round Rock on Sunday.