**Mariners morning: Woo to the bullpen? Trade deadline heat rising** - **SEA** — Bryan Woo could shift to a bullpen role this weekend as Seattle manages his workload - **SEA** — Brendan Donovan's return timeline remains murky, no timetable given by the club - **SEA** — A Luis Castillo trade would be complicated; insiders warn Seattle faces tough leverage - **SEA** — Rookie's hitting struggles drawing attention; insiders weigh in on what's going wrong - **SEA** — Debate building on whether Mariners should be aggressive buyers at the trade deadline - **SEA** — Colt Emerson drawing rave reviews, with one former infielder calling him "a unicorn" **Watch whether Seattle's front office signals buyer or seller mode as the deadline approaches.** The lineup's set. Drop in.