Ellerman also could lose his license to practice law. He entered the plea in U.S. District Court the day after federal prosecutors announced he struck a deal that would prevent two San Francisco Chronicle reporters from going to jail for refusing to divulge their source. TENNIS: Top-seeded Andy Roddick defeated Sam Querrey (Thousand Oaks High) 6-4, 7-6 (3) to advance to the quarterfinals of the SAP Open in San Jose. Unseeded Croatian Ivo Karlovic, ranked 103rd in the world, upset second-seeded James Blake 6-7 (4), 7-6 (11), 6-4 and also advanced to the quarterfinals. SOCCER: Adam Cristman and Patrick Ianni each scored a goal to lift the U.S. under-23 national team to a 2-0 win over Chivas USA of Major League Soccer in an exhibition at Home Depot Center. 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! Ellerman briefly represented Victor Conte, the founder of the Bay Area Laboratory Co-operative, the Burlingame-based supplements lab that allegedly provided performance-enhancing drugs to the elite athletes. He later represented BALCO vice president James Valente and that’s when he obtained transcripts of the athletes’ testimony from federal prosecutors. GOLF: Paula Creamer shot a 5-under 67 for a share of the first-round lead with rookie Paige Mackenzie and veteran Sherri Steinhauer in the LPGA Tour’s season-opening SBS Open in Kahuku, Hawaii. COLLEGES: The University of Arkansas trustees are scheduled to meet Saturday amid media reports that 82-year-old athletic director Frank Broyles will resign with the Razorbacks’ football program in turmoil. COLLEGE BASKETBALL: Texas Tech coach Bob Knight was reprimanded by the Big 12 Conference for saying the officiating was “horrendous” after a double-OT loss at Oklahoma State on Saturday. Bowling Green coach Dan Dakich was reprimanded by the Mid-American Conference and the university’s athletic director for his profanity-laced comments about the officiating after his team’s 98-90 overtime loss to Buffalo on Tuesday. A Colorado lawyer pleaded guilty in federal court Thursday in San Francisco to obstructing justice by leaking secret grand jury documents to two reporters covering the government’s probe of steroids in sports. Troy Ellerman, 44, could be sent to prison for as long as two years and fined up to $250,000 for the convictions. His sentencing was scheduled for June 14.