Dallas (3-3) at San Francisco (3-4) Sunday, 8:20 p.m. EDT, NBC BetMGM NFL odds: 49ers by 4 1/2. Against the spread: Cowboys 2-4; 49ers 3-4. Series record: 49ers lead 20-19-1. Last meeting: 49ers beat Cowboys 42-10 in Santa Clara, Calif., on Oct.