SANTA CLARA – The 49ers’ fourth straight win was never in question Sunday.

The greater mystery was how high their playoff seeding could climb, both by sundown here against the hapless Tennessee Titans as well as over the next three weeks to close the regular season.

By virtue of Sunday’s 37-24 triumph, the 49ers’ record improved to 10-4 overall, essentially sealing at least a wild-card playoff spot but keeping a higher seed in play, perhaps even the NFC’s No. 1 spot.

The 49ers entered Sunday as the No. 6 seed, and that’s where they remain, although NFC West rivals Los Angeles (11-3) and Seattle (11-3) each rallied to post Week 15 home wins.

Next for the 49ers is their final away game this regular season, a Monday night visit to the Indianapolis Colts, before coming back to Levi’s Stadi

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