Sachin Tendulkar scored his 80th first-class century for Mumbai to help his team post 272 for three on the first day of their Ranji Trophy quarter-final clash against Baroda at the Wankhede Stadium in Mumbai today.He was well-supported by opener Wasim Jaffer (137 not out), who scored his second consecutive century today, having hit 171 against Gujarat in their last league game. The Baroda bowlers struggled after picking up two early wickets even as Yusuf used as many as seven bowlers to get a breakthrough. At stumps, Jaffer was unbeaten on 137 off 256 balls. For Baroda, Vahora chipped in with two wickets for 50 runs in 23 overs.