English rugby club Exeter Chiefs is now American-owned after being bought by a U.S. investment company whose expanding portfolio already includes Premier League team Bournemouth. Black Knight Rugby, a new subsidiary of Cannae Holdings, has completed the 100% purchase of the Chiefs, Exeter announced Tuesday. Exeter was European rugby champion in 2020 and English champion in 2017 and ’20. As well as Bournemouth, Cannae Holdings — fronted by American businessman Bill Foley — also owns other soccer