The only good news Saturday, according to Greg Ostertag, was the play of the Kansas Jayhawks.
   
The only good news for the Jazz, on the other hand, was the play of Ostertag.
   
Maybe it was the company he was keeping.
   
Faced with David Robinson and Tim Duncan down low, the KU grad turned in one of his best performances of the season, helping the Jazz stay close to San Antonio, at least for a half. Ostertag scored seven points in each of the first two quarters, outrebounded Duncan and Robinson almost by himself, and generally made life tougher for a couple of post players used to having their way.
   
"Oster kept us in the game," said Karl Malone. "He just didn't get any help."