Gary Cohen just raised an interesting point on today's Mets broadcast after Pete Alonso reached first base on a dropped fly ball right around the foul line but was thrown out trying for second base: could the Mets (the offensive team) have challenged the fair/foul call to negate the out and extend Alonso's at bat even though they'd be asking to negate a hit for one of their own players? More generally, is there any limit to which team can issue a particular challenge, or could either team ask to review the same call, even if it might be detrimental to their cause? As far as I understand the replay rules, any play which isn't specifically listed as reviewable can't be reviewed by either team, but as far as I know the rules have no mention that a specific team must be the one to issue a challenge, so I would assume there is no such restriction. I can think of other situations where this could come into play, for example, runner on third comes in to score on an apparent wild pitch, the defensive team might want to challenge for a hit by pitch so the ball would be dead and the run wouldn't count. Anyone know of a specific ruling on this?