Ryan Fox withdrew from the RBC Heritage due to illness. The Kiwi golfer caught a cold during his debut appearance at the Augusta tournament last week. He said after the second round of The Masters that he had felt ill and achy.After completing The Masters, Ryan Foz arrived straight in South Carolina to play at the RBC Heritage. Fox succumbed to illness and was forced to withdraw from the tournament after playing nine holes in the first round. View this post on Instagram Instagram PostEarlier this week, the 36-year-old golfer told Stuff that he was limited to 18 holes ahead of the tournament and reserved an hour in range. He said:"I've been better. I think last week I used every bit of energy I had to get through the weekend (at the Masters) and I just crashed and burned this week,’’ Fox said."To be honest, Sunday was a tough day. I think I played decent on Friday even while feeling sick. I think adrenaline got me through that, and then Saturday we had the awful weather.“I was struggling through that a little bit but got around. Sunday coming down the stretch I was pretty tired, everything was kind of hurting. I felt like I kind of lost my golf swing a bit, had no energy and I was just fighting everything, " he added.Ryan Fox will now return to play in the PGA Championship, which is scheduled to take place in May at the Oak Hills East Course.Kevin Kisner withdraws from RBC HeritageKevin Kisner has also withdrawn from the 2023 RBC Heritage after playing the opening round of 79. No reason was given for his withdrawal. He missed the cut last week at The Masters.Kevin Kisner has struggled with his performances this season and missed the cut in half of his starting 10 events. View this post on Instagram Instagram PostKisner started the RBC Heritage with a bogey on the first hole. He made six bogeys and a double bogey to finish with a score of 8-over.Ryan Fox, on the other hand, played only half a round and withdrew from the tournament. He started the tournament with a bogey on the 14th hole and then made a double bogey. He made two consecutive bogeys to finish at a score of 6-over after playing on nine holes.The first round of the RBC Heritage was suspended on Thursday. After an unfinished inaugural round, Viktor Hovland registered the lead with a score of under 7.Brian Harman settled for second position alongside Jimmy Walker and Aaron Rai with a scoring deficit of five. View this post on Instagram Instagram PostHere's the leaderboard for the RBC Heritage Round 1:1. Viktor HovlandT2. Brian HarmanT2. Jimmy WalkerT2. Aaron RaiT5. Joel DahmenT5. Scott StallingsT5. Matt FitzpatrickT5. Zach JohnsonT5. Sungjae ImT5. Justin RoseT11. Xander SchauffeleT11. Rickie FowlerT11. Andrew PutnamT11. Wyndham ClarkT15. Emiliano GrilloT15. Terrell HattonT15. Matt KucharT15. Ernie ElsT15. Patrick RodgersT15. Mark HubbardT15. Adam LongT15. Taylor MooreT15. Scottie SchefflerT15. Jordan SpiethT15. Stewart CinkT15. Kramer HickokT15. Doug Ghim