The 2025 John Deere Classic has already seen its share of unexpected exits, with 3 players, namely Andrew Putnam, Nicholas Lindheim, and Stephan Jaeger, pulling out mid-tournament.But on Saturday, the field lost a 4th name, and this one sent a ripple through the golf world.Aldrich Potgieter, the 20-year-old South African who just clinched his maiden PGA Tour win at the Rocket Mortgage Classic last week, withdrew after Round 3.Potgieter earned $1.728 million and 500 FedEx Cup points for his playoff victory in Detroit and entered the John Deere Classic riding high.He opened with rounds of 67 and 66, sitting at 9-under and well inside the cut line. But Saturday saw a different story. Potgieter carded a 5-over 76, tumbling from T13 to T58.And despite still being eligible for a solid paycheck and FedEx Cup points, he withdrew shortly after signing autographs, with no official reason provided.After that, fans quickly posted their speculations on social media. Some pointed to the emotional and physical toll of back-to-back starts, especially after a career-defining win.Others noted his visible frustration during Saturday's round, which included 3 bogeys, a double, and just 3 birdies."PGA does not get its players ready to play on the weekend. Too few events, no cut exhibitions. They just can't handle the grind," one fan posted on X.Another added, "Sure would be a shame if he took off cuz that 75"Potgieter had hinted earlier in the week that he was still adjusting to the whirlwind."I mean, I can't stop smiling when people talk about [the Rocket win]," he said after Round 1. "I've never played a tournament after I won such a big event, so I really didn't know how today was going to go."The withdrawal comes just as Potgieter was gaining momentum.In 15 PGA Tour starts this season, he's logged three top-10s, including a runner-up at the Mexico Open and a T6 at the Charles Schwab Challenge.He currently sits at No. 49 in the OWGR and is eyeing a potential spot at The Open Championship via the reserve list.Next, the 20-year-old PGA Tour winner is expected to tee it up next at the Genesis Scottish Open, but this sudden WD has certainly opened the gates for more questions than answers.More Golf: Carlos Alcaraz uses golf to hit back at Andy Murray from Wimbledon