Freddie Couples creates a comfortable cushion in the Charles Schwab Cup Championship at TPC Harding Park. Freddie Couples / Getty Images Freddie, who is winless this season fired a -3 under par 68 third round to extend his lead at the top of the Charles Schwab Cup Championship to five points, with his -15 under par total. Freddie acknowledged this is the best he has played this year; “The best I played this year, I’m right there. If someone says are you going to win the Schwab Cup, I would have to have the greatest year ever because I'm going to play 14 times where some guys are going to play 22 times and some of those guys are Kenny Perry and Bernhard Langer, who dominate. This year I played Augusta, Los Angeles and Memorial, 13 out here, so that's 16, there are 52 weeks, I'm playing 16 of them. Wow, I'm really killing myself. I'm going to play Riviera and Augusta, so 18 Champions Tour events, I think that's pretty good, and if I do well and keep going, I could play like the SAS Championship and Hickory, which would push it to 20." "I enjoy having a lead, sometimes when you go and play with a lead, you try to expand it. If you're behind, every shot is important. I don't do well with that. I'm just going to go out and play. For the most part it's about stepping up and just hitting it." Mark O'Meara is in second place after his -4 under par 67. Th defending champion Tom Lehman had the best round of the day, a -6 under par 65, which propelled him up the leaderboard to join Bart Bryant and Peter Senior at -9 under par. Bart carded a -1 under par 70, and Peter slipped with a +1 over par 72. Mark was happy with the driver, but missed some putts; " I drove the ball pretty well. I had some good opportunities early in the round when I hit good putts that just missed the hole." Charles Schwab Cup points leader Kenny Perry is tied for seventh at -7 under par after a 67, and arch rival for the overall title, Bernhard Langer, who needs a victory and also some help to catch Kenny, also was at -77 under par after a modest even par round of 71.