In the second round at TPC Craig Ranch, the 30-year-old Korean fired an 11-under 60, fumbling a chance at the 16th sub-60 round in PGA Tour history.

Kim Si-woo carded a spectacular 60 marred only by an agonizing bogey at the last to seize a five-shot lead on Friday at the PGA Tour CJ Cup Byron Nelson in Mckinney, Texas.

Si Woo Kim just missed out on a 59 at the CJ Cup Byron Nelson, bogeying the final hole when a par would have given him the 16th sub-60 round in PGA Tour history.

In the second round at TPC Craig Ranch, the 30-year-old Korean fired an 11-under 60, fumbling a chance at the 16th sub-60 round in PGA Tour history.