The Angels claimed Watson off waivers from the Red Sox on Friday.
The Red Sox designated Watson for assignment earlier in the week after he posted a 4.53 ERA, 1.31 WHIP and 43:19 K:BB across 55.2 innings out of the bullpen for the Red Sox this season. The Rule 5 pick handled himself reasonably well in his first taste of big-league action and will work out of the Angels bullpen over the final two months of the campaign.