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The John Deere Classic, which concludes Sunday, was once the lead-in to The Open Championship, but that's no longer the case.  And that hasn't helped its strength of its field. J.T. Poston led the John Deere Classic after Round 3, but with Daniel Berger withdrawing from the field earlier this week, there are now zero top-50 players in the Official World Golf Rankings set to compete at TPC Deere Run.

What is their loss is others' gain, however, as the 2022 John Deere Classic presents a vital opportunity for players to begin one last push into the postseason. Less than two months away from the onset of the FedEx Cup Playoffs, those on the bubble of the top 125 will look to this week as a chance to secure their positioning or perhaps make a full-on leap into playoff contention.

After three rounds, it's Poston who carries a three-stroke lead going into Sunday's final round. Following up on a strong second-place performance at the Travelers Championship, Poston finds himself at 15 under and playing tremendous golf. Journeymen and rookies alike are ready to take to TPC Deere Run for what is sure to be yet another exciting weekend on the PGA Tour.

All times Eastern; streaming start times approximated

Round 4 - Sunday

Round starts: 7:55 a.m.

PGA Tour Live: 7:30 a.m. - 6 p.m. -- PGA Tour Live
Early TV coverage: 1-3 p.m. on Golf Channel

Live TV coverage: 3-6 p.m. on CBS
Live simulcast: 3-6 p.m. on and the CBS Sports App

Radio: 1-6 p.m. -- PGA Tour Radio