Give Pettersen credit on Saturday at the Corona Championship.
With Lorena Ochoa a national golf hero, and playing in her homeland with all the support that goes with that, Pettersen didn't back down in their head-to-head duel in the third round. Ochoa needed a birdie at the 17th hole to secure a one-shot lead going into Sunday's final round, where she'll be paired once more with Pettersen. Ochoa won this event by 11 shots last year.
After making a bogey early in the first round, Pettersen has made 16 birdies and two eagles without another bogey over the last 50 holes. With these birdie machines in good form, Sunday could be a shootout. Ochoa's at 20 under. The LPGA 72-hole record for scoring in relation to par is 27 under. Annika Sorenstam set the mark at the Standard Register Ping at Moon Valley Country Club in Phoenix in 2001.