SYDNEY (AP) — The Cronulla Sharks led 18-2 at halftime then withstood a second-half comeback attempt by Penrith to edge the Panthers 21-20 and advance to the National Rugby League semifinals on Friday. The Sharks will play the Melbourne Storm next Friday, with the winner advancing to the NRL championship match. Cronulla needed a field goal from halfback Chad Townsend with five minutes remaining to break a 20-20 deadlock. The Sydney Roosters, already through to the semifinals, await the winner of Saturday's second-round playoff match between South Sydney and St.Read more on NewsOK.com