Lee, an 18-year-old who turned pro after the Masters, was at 4-under 140, just four shots out of the lead.
I was very nervous playing the last five holes, Lee said. This is going to be my first cut as a professional. I was really nervous about it and I did play really well.
Pressure is nothing new to Lee. He won the Johnnie Walker Classic in February, becoming the youngest champion on the European tour.