Seamus Power shot to the top of the Fed-Ex Cup standings and into a top-30 world ranking after a closing round 68 was enough to secure a tie for fourth at the World Wide Technology Championship at Mayakoba.Wire-to-wire leader Russell Henley survived an early scare to win the tournament on 23-under par, four shots clear of Brian Harman.FULL LEADERBOARDPower, along with Scottie Scheffler, Joel Dahmen, Troy Merritt and Will Gordon were a further shot back.Just a week after winning the Bermuda Championship, the Waterford native collected a cheque for $375,560 to move into the world's top 30 and the automatic Ryder Cup qualifying places from the World Points List.After a couple of eagles yesterday, including a hole-in-one, on his way to a 63, Sunday's round never quite hit the same heights, though two early birdies got him to within four shots of Henley at one stage, who dropped his first shot of the week on the fifth.However the 33-year-old American promptly birdied the next three holes and cruised to a fourth PGA Tour title, his first since the 2017 Houston Open.Power was really chasing second position, but could only pick up one shot on the back nine, the par-five 13th which has been good to him all week.The 35-year-old began the tournament in fifth position in the Fed-Ex Cup standings, one place above Rory McIlroy, but the eye-catching display moved him to number one for the first time in his career, ahead of Keegan Bradley and Tom Kim.A closing 70 saw Henley equal the tournament record with a total of 23-under par.The American, who had failed to convert any of his last five 54-hole leads into a victory, told Golf Channel: "I just tried to learn from my past and my screw-ups."All of those events I didn't close, they hurt