Former Open champ swings into contention with a third round 64 at Byron Nelson Invitational . Oosthuizen tied with America 's Brad Todd on 10-under par with one round remaining . Open winner Jan Kaymer five strokes back of Todd .
Former Open champ swings into contention with a third round 64 at Byron Nelson Championship . Oosthuizen tied with America 's Brendon Todd on 10-under par with one round remaining . Players winner Martin Kaymer five shots back of lead .