By Tom Victor Ronnie O’Sullivan was made to work hard in the Masters Snooker final by rival Ali Carter before blowing his opponent away with some accomplished snooker in the final few frames to claim the title. O’Sullivan, a seven-time world champion, also held a record seven Masters titles going into his final against Carter. He trailed 5-3 after the first session in the best of 19 match, but battled back to draw level at 6-6 and 7-7 before getting his nose in front and getting within a frame of victory with a break of 89 in the 16th frame, finally sealing victory despite some nervy moments a…