Blue Jays' left-field position remains unsettled

Melvin Upton Jr. is one of a handful of Blue Jays in the mix for playing left field. (AP)CLEARWATER, Fla. -- To update the old Abbott and Costello routine, Who's in Left?

When the Blue Jays faced the Phillies in Grapefruit League action Thursday at Spectrum Field, it was Melvin Upton Jr. He's the outfielder who was acquired just before last season's non-waiver Trade Deadline.

But there's also Ezequiel Carrera, starting his third season with the Blue Jays, who played 110 games in 2016. Not to mention Steve Pearce, who was signed to a two-year, $12.5 million contract this offseason. There was some thought earlier this spring that Pearce could win the job outright, although he still hasn't…