jay haas

Jay Haas is one of only two past champions in the top 10 after 36 holes.

By the numbers: Second round

By T.J. Auclair, PGA.com Interactive Producer

80: The number of players that made the cut in the 74th Senior PGA Championship presented by KitchenAid, which fell at 4-over-par 146.

5: The number of PGA Club Professionals -- out of the 40 who started on Thursday -- to make the 36-hole cut. Those players are: Jeff Coston (2 under), Mark Mielke (2 under), Sonny Skinner (2 under), Don Berry (1 under) and Bob Gaus (3 over).

2: The number of past Senior PGA Champions (Jay Haas, Tom Watson) who are in the top 10 through 36 holes. Haas is currently tied for fourth at 4 under and Watson is tied for eighth at 2 under.

3.561: The scoring average on the 213-yard, par-3 sixth hole Friday, which played as the most difficult in Round 2.

3.574: The scoring average on the 248-yard, par-4 11th hole Friday, which played as the easiest in Round 2. 

66: Or, 5 under par, the lowest score recorded in Friday's second round by both Kenny Perry and fellow Kentuckian Russ Cochran.

87: The number of spots Scott Hoch and Bob Tway moved up the leaderboard in Round 2, the biggest moves of the day. Hoch fired a 4-under 67 and went from a tie for 124th after Thursday's first round to a tie for 37th. Tway had the identical impressive turnaround.  

104: Number of spots Larry Mize dropped on the leaderboard Friday after his second-round 82.

12: The difference in number of strokes between Bernhard Langer's opening round of 8-over-par 79 and second round of 4-under 67. The bounceback was remarkable for the man who has been the best player on the Champions Tour in 2013, and was just enough to make the cut on the number at 4 over.

0: The number of Champions Tour events and major championships that PGA Club Professional Bud Lintelman had played in before getting into the field this week as an alternate. Lintelman got his spot when Steve Elkington withdrew due to a migraine. Though he missed the cut, Lintelman will never forget this week -- with Elkington's withdrawal, Lintelman was paired with Tom Watson and Peter Jacobsen for the first two rounds.