8:15 pm: The Tigers announced Alexander as the starter for tomorrow's second game. A 40-man roster will be announced tomorrow.
8:11 pm: Tonight's game between the Tigers and White Sox has been postponed due to rain, which could impact the team's decision with Alexander, McCosky tweets .
7:58 pm: The Tigers will select the contract of lefty Tyler Alexander tomorrow, reports Chris McCosky of the Detroit News. He'll be the 26th man of tomorrow's doubleheader against the White Sox and start Game 2 of that twin bill.
Alexander, 24, was a second-round pick out of Texas Christian University back in 201
Alexander's standing within the Tigers' prospect rankings has slipped as the team's system has improved about the course of its rebuild. He was once considered to be among the organization's more promising overall prospects but has taken a bit of a backseat with the arrival of new arms and some diminished results of his own in recent seasons. Kiley McDaniel and Eric Longenhagen or Fangraphs mentioned him in their overview of Detroit's system heading into the season, writing that Alexander "throws strikes and eats innings and is a good bet at least be a sixth starter type of depth arm."