Yusei Kikuchi falters in 5th inning as Angels lose to Mariners

ANAHEIM — The Seattle Mariners kicked off baseball’s trading season on Thursday with the first significant deal ahead of next week’s deadline, bolstering their offense by acquiring Arizona first baseman Josh Naylor for a pair of pitching prospects.

The Angels came out of the All-Star break with visions of joining the Mariners in the buyers’ aisle, hopes that were buoyed by their two wins in a three-game series in Philadelphia last weekend.

But they are looking more and more like...