World number two Jordan Spieth said usurping Rory McIlroy is one of his goals, but major vengeance is also a factor for him in August.
Jordan Spieth said he is out to avenge his failure to continue his Grand-Slam bid, which was narrowly ended at St. Andrews.
Spieth can rise to the number one ranking with a win at the WGC-Bridgestone Invitational starting on Thursday, given incumbent Rory McIlroy's continued absence with an ankle injury.
But the history-making 22-year-old said he also has an itch to scratch at the PGA Championship starting on August 13, with Spieth rueing the fact he is not going to be teeing off for a chance at winning all four calendar year majors.
Spieth had a share of The Open lead with two holes to play, only to bogey 17 and miss a birdie putt to make the play-off - eventually won by Zach Johnson - with the U.S. Open and Masters champion settling for a tie for fourth.
"I'm hoping to kind of prove, coming off of this last major, that I've got a little bit of revenge that I need to get out from having control of the Open championship with two holes to go and not closing it out," Spieth told a news conference in Akron, Ohio.
"That leaves kind of a bad taste in my mouth, not because of the third in a row, but strictly because you don't get many opportunities to contend in a major, in an Open championship at St. Andrews in your life.
"But I'm re-establishing goals, first and foremost, this week.
"I've also got a big one next week... there's a number one spot up for grabs. As long as I look at it that way, there's still a lot to work hard for and play for."
Spieth said he was happy to be in the position to re-adjust his goals further north of where he had them, which - eight short months ago - was to improve his then-ranking of ninth.
"At the beginning of the year, I wanted to work my way up the world rankings," Spieth said.
"I didn't think I could be in this position or have this opportunity. We've accomplished so many goals.
"To re-set them and have yet another one to work really hard for is special.
"It would be really, really incredible at the end of this week if I was able to hold that trophy and have that position going forward."
Spieth's only appearance at the Bridgestone Invitational was a finish in 49th spot in 2014, which he followed up by being cut at the PGA Championship the following week.