Crabtree likely to start for 49ers

SANTA CLARA, Calif. — Frank Gore is healthy again and eager to play. Michael Crabtree is set to make his NFL debut and possibly even start. Mike Singletary has made changes to his inconsistent offensive line. The San Francisco 49ers got a lot done during their bye week and now are gearing up for a tough road game Sunday at Houston, hoping to forget about their 45-10 rout at the hands of Atlanta on Oct. 11. Gore spent the latter part of the off week at team headquarters working out with Crabtree, the rookie receiver who finally signed a six-year contract Oct. 7 after missing all of training camp and the early weeks of the season.