New Mission 68, West Roxbury 62 — With the score tied at 55 in the final seconds last night, Samir McDaniels made a dangerous mistake. The New Mission senior turned the ball over and watched as host West Roxbury streaked down the court needing just a layup to secure victory. The West Roxbury shot missed as time expired and the game went into overtime, where McDaniels took charge. He drained 8 of his 31 points in overtime and helped lift New Mission to a 68-62 victory. ‘‘This was a huge win for us,” said coach Cory McCarthy. ‘‘It really set the tone for our season. Westie is always a tough place to play.” Things started slow for New Mission (2-1). With star forward Kachi Nzerem in early foul trouble, the Titans struggled to gain a rhythm. Nzerem managed 9 points and his team was down by 11 at intermission. ‘‘They got off to a really fast start and we were struggling a bit,” McCarthy said. ‘‘We got into some foul trouble and we were a bit careless with the ball.” Then McDaniels went on a tear. The 6-foot-4-inch senior knocked down 15 points in the second half and 8 in overtime, buoyed by his 13-for-14 effort at the free throw line. McDaniels helped clinch the victory by stealing a West Roxbury inbounds pass early in overtime and converting it on the other end, giving his team a 7-point cushion. Roger Paul led the Raiders with 14 points.