What, exactly, did the All-Star pitcher acquire from the Mariners? A yacht to use on Puget Sound? A lifetime supply of passes to the top of the Space Needle? Coupons for free food at Pike Place Market?
The pitcher acquired nothing from the Mariners, of course. He was acquired from the Mariners. Was acquired. That linking verb was left out of this article about the pitcher, and I'm making a pitch for its inclusion after who. (Editor's note: The sentence also would have worked by deleting who.)
Without was (or with who), this writer's work is all wet — like an Emerald City citizen without an umbrella in November.