EAST RUTHERFORD, N.J. — Everything the Giants offense has done this preseason carries a major caveat: Star wide receiver Odell Beckham Jr. hasn’t played and rookie running back Saquon Barkley has barely been on the field.



With that in mind, quarterback Eli Manning’s performance in a 22-16 win over the Jets in Friday’s preseason matchup was particularly encouraging. Manning shouldn’t be throwing key third-down passes to the likes of Hunter Sharp or handing off to a broken-down Jonathan Stewart once the regular season starts.



Instead, those passes will be going to the explosive Beckham and it will be the dynamic Barkley carrying the ball. So, watching Manning complete 17-of-23 passes for 188 yards offered a glimpse of how potent this offense could be under new coach Pat Shurmur once Beckham is turned loose in his comeback from a broken ankle and Barkley recovers from a minor hamstring injury.



“You project what their effect...