Turnbull's numbers have taken a turn for the better recently, while former Whitecaps starter Chad Green has struggled in Double-A.
Experienced college pitchers tend to dominate the lower minors (particularly in the pitcher-friendly Midwest League) and West Michigan Whitecaps righthander Spencer Turnbull is no exception. He is 8-2 with a 2.95 ERA in 15 starts with the Whitecaps this season, and was named a Midwest League All-Star. West Michigan had several other starters put up similar numbers in recent years, so Turnbull's stats aren't jump-off-the-page noteworthy, but his recent performance may be. Turnbull has just one loss since May 1, and is 5-0 with a 2.