RIVERIA MAYA, Mexico -- Brittany McPhee scored 22 points and Karlie Samuelson hit six 3-pointers for 20 points and No. 11 Stanford turned back Purdue 78-69 on Saturday to win the Cancun Challenge.Briana Robersons 3 put the Cardinal (6-1) up for good 58-55 with 1:24 to go in the third quarter. Stanford pushed its lead to nine points midway through the fourth but two free throws from Ashley Morrissette had the Boilermakers (3-4) within three with 2:24 to play.Purdue only made two of its last 13 shots while Stanford was 9 of 12 from the line in the fourth.There were six ties and eight lead changes in the first half and both teams had five-point leads but the Boilermakers made 9 of 11 free throws in the second quarter for a 42-39 lead.Earlier both teams beat Northeastern and Wichita State. Purdue won by a combined 52 points, Stanford by 77.Erica McCall had 16 points, 12 rebounds and three blocks for Stanford. Roberson scored 11 off the bench.Morrissette led Purdue with 23 points and eight rebounds, Bridget Perry had 16 and seven. Lewis Hamilton fears Formula One could be left kicking itself if a driver gets injured in an accident that could have been prevented by the Halo cockpit protection device.The FIA had been pushing to introduce head protection in time for next season but the F1 Strategy Group unanimously voted against introducing Halo for 2017 ahead of the German Grand Prix, allowing further time to continue to develop the concept for 2018.When asked about his thoughts on the vote to reject the device for 2017, Hamilton said he hopes there are no unintended consequences as a result of not running Halo next year.I dont really know why its not going to be there next year and that was a point that I made, he said.I basically had asked that if we are unfortunate enough to have an incident in the next year and a half and we knew we had a solution for it -- that would have played a role in it -- at the end of next year we are really going to be kicking ourselves.The three-time world champion, who had previously been a critic of the devicce, changed his mind over Halo after viewing an FIA presentation during the Hungarian Grand Prix last month.ddddddddddddMercedes teammate Nico Rosberg and Ferraris Sebastian Vettel are among the drivers who have publicly voiced their support of Halo, with Vettel stating that no argument against Halo could justify death. Having seen the FIA demonstration portraying the benefits of Halo, Hamilton believes the concept should not be ignored.Theyve got a solution which does help and I think the great thing; the FIA have done a fantastic job in the last 20-odd years in always making increments and steps and while it doesnt look great, we know that, but that 17 percent we cant ignore.I just hope in that space of time when we know that we do have it and the teams can afford to put it on the cars, between now and next season, I hope in that period of time no one gets injured, including myself. ' ' '