The Toronto Blue Jays have traded Yusei Kikuchi to the Houston Astros in exchange for three prospects, both clubs announced Monday. The 33-year-old lefty is 4-9 with a 4.75 ERA this season, the final year of the contract Toronto inked him to after the 2021 season. The Blue Jays entered this season with high hopes but are currently last in the American League East. Meanwhile, the Astros are leading the American League West as they aim for an eighth straight postseason berth. In need of starting pitching, the Astros included their ninth-best prospect, as ranked by MLB.com, pitcher Jake Bloss, an…