Rory McIlroy was resplendent in winning the WGC Bridgestone Invitational at Firestone Country Club, overcoming a three shot deficit to win by two shots, and in doing so became World Number One again. [caption id="attachment_6378" align="alignnone" width="600"] Rory and Trophy / Getty Images[/caption] Rory returned a final round of -4 under par 66 to post a winning total -15 under par to win the WGC Bridgestone Invitational by two shots, again, over Sergio Garcia. At the post match interview Rory stressed the importance of his well-behaved driver; “If you're hitting arguably the hardest club in your bag that well, then the other stuff should sort of fall in line. Whenever I drive the ball well, I always put myself in positions where I can attack flags and try and make birdies, but when I'm swinging it well with a driver that sort of funnels through the rest of my game.” The big thing for me is if you let it affect you mentally, it makes it more difficult, if you can stay strong mentally when you’re going through the struggles you always seem to come out the other side OK. It’s when it affects you mentally you can start to lose confidence, then you’re losing confidence in your swing. It can spiral out of control, kind of like I did last summer." “It's the most comfortable I've ever felt trying to close out a golf tournament out there today. I felt normal. I felt like it was the first round or the second round. It didn't feel like a fourth round. What I am really proud of this week is following on from The Open with a performance like this." "I said straight after I did not want any let down, I wanted to keep going and performing until the end of the season. It's great to come to one of my favourite tournaments of the year and to perform like this I am pretty satisfied." Sergio's putting problems resurfaced, he carded a +1 over par 71, for his -13 under par total; “I didn't feel comfortable on the greens at all, with the spin of the greens changing quite dramatically after the rain, they got a little bit; they were quite slow for the last three days." “I started kind of second-guessing myself every single putt, and because of that, I didn't; the good putt I hit, I misread, and the bad ones, obviously, weren't going the right direction either.” Marc Leishman finished in third position on his own at -13 under par, another steady round of -3 under par 67, keeping him near the top of the leaderboard, where he has been all week. Adam Scott missed his chance to stay at World Number One, shooting a last round +1 over par 71, to finish in a tie for 8th, he bogeyed three of his final five holes; “I was pretty scratchy every round this week, so I was scrambling a bit, and that was good. But just lost my rhythm a little bit on a couple of holes on the back nine. Couldn't scramble hard enough.” " It's all good, it's been a lot of fun. Obviously, Rory's in incredible form at the moment. He'll be the man to beat next week, by the looks of things, and I'll be gunning for him for sure.” Phil suddenly found some real form with a final round -8 under par 62, and a T15 place, so he could be a contender next week at the PGA; “This was a big day for me heading into next week because I feel like I'm not trying to search and find it on Thursday. I feel like my game is right there. I feel like I found what I'm looking for. I just have to keep it going and build on today's round and put together four good, solid rounds." “I don't know what will happen next week, but if I play well, I'll look back to today's round as being the key point.” Tiger had to withdraw from the tournament, citing back problems, it is unlikely that he will appear next week.