A quick glance at the PGA Championship

A glance at Friday's second round of the PGA Championship at 7,163-yard, par-70 Oak Hill Country Club (East Course):

Leading: Jason Dufner, who shot 7-under 63 and was at 9 under.

Pursuing: First-round co-leaders Adam Scott and Jim Furyk, and Matt Kuchar were two shots back.

Tiger watch: Tiger Woods shot even-par 70 and lost ground. He was 10 strokes behind Dufner.

Key statistic: The cut was at 143, lowest at a PGA Championship since 2001 at Atlanta Athletic Club.

Noteable: Twenty-five players have carded rounds of 63 in a major championship. Only five have gone on to win the tournament.

Quotable: "Probably the worst putt I hit of the day." — Dufner, after his birdie try at the 18th for a record-breaking 62, failed to reach the hole.

Television: 11 a.m.-2 p.m., TNT; 2-7 p.m., CBS.