When the Mariner chose Jason Bay over Casper Wells a reserve outfielder, designating Wells for assignment on March 31, they knew they stood a good chance of losing him. And now it has happened, with the Toronto Blue Jays claiming Wells off waivers, first reported by Peter Gammons of MLB.com. Today was the final day of the 10-day window to resolve Wells’ status. Had he cleared waivers, the Mariners could have assigned him to Tacoma. But now he’s the property of the Blue Jays, who must put him on their 25-man roster or else designate him for assignment themselves if they attempt to send him to the minors. Wells, 28, hit .225 with 17 homers and 51 RBIs in 124 games with the Mariners after they acquired him from Detroit as part of a trade for Doug Fister on July 30, 2011. The Mariners also acquired Charlie Furbush, who is part of their bullpen; Chance Ruffin, being converted to a starter in Double-A this season; and prospect Francisco Martinez, who was shifted from third base to center field.