Lincoln native Jack Sock is one of eight American players to receive an invitation to play in the 2010 Australian Open Main Draw Wild Card Playoff Dec. 5-7 in Norcross, Ga.

The 17-year-old Sock is the only amateur player in the eight-man field.

The winner earns a spot in the main draw of the Australian Open in January.

VOLLEYBALL: The Missouri Valley Conference Tournament starts tonight with two matches at Creighton's Sokol Arena. Southern Illinois will face Wichita State at 6 p.m., following by Creighton's match with Drake. Semifinals are Friday with the championship on Saturday.

SOFTBALL: Lincoln North Star senior pitcher Paige Policky has signed a national letter-of-intent to compete at South Dakota beginning with the 2011 season. Policky, a senior left-hander, was named the co-captain of the Lincoln Journal Star Super State team and is a two-time Super State selection.

FOOTBALL: Nebraska-Kearney senior center Jack Hiett is one of eight finalists for the Gene Upshaw Division II Linemen of the Year Award.

SOCCER: Lincoln native Tyler Polak has been named a finalist for the young U.S. male soccer player of the year. Polak played on the FIFA U-17 World Cup team earlier this fall.

GO-KART RACING: Three days of indoor go-kart racing are scheduled this weekend at the Lancaster Event Center. The annual Turkey Chase starts Friday with racing at 6 p.m. On Saturday and Sunday, racing is set for noon.