Pete Cowen revealed he laid down the gauntlet to fuel Brooks Koepka at Shinnecock Hills and can see the American winning more majors after clinching back-to-back U.S. Open titles.
Koepka held his nerve in Long Island on Sunday to become the first man since Curtis Strange in 1989 to successfully defend the U.S. Open trophy.
Cowen, Koepka's short-game coach, warned the world number four he would not realise his potential unless the 28-year-old improved his attitude before he won his first major at Erin Hills last year.
The Englishman, who also coaches the likes of Henrik Stenson and Matt Fitzpatrick, issued another challenge to ensure Koepka was fully motivated ahead of his latest triumph.
Cowen told Omnisport: "I'd been to Memphis the week before last year's U.S. Open and watched him play all four rounds and his attitude and body language was very poor, so I pulled him to one side on the Tuesday at the U.S. Open and said, 'Look, you're not going to win anything with that sort of attitude.'
"I challenged him again this year by saying, 'You want to make sure you keep hold of that trophy, it's a big challenge to keep it so make sure you do.'"
Koepka has established himself as one of the top players in the world and Cowen said he can go from strength to strength.
"He is a very cool character, he doesn't get stressed, he doesn't show any temper, snap clubs... You won't know if he's made a birdie or a bogey on the hole before. He's able to dismiss whatever has happened before almost instantly," he added.
"I've worked with him for the last five years and he's been like that all that time.
"You would say he can win more majors, he's young enough, he's number four in the world now and when you are at that sort of standard you are always capable of winning more. He is very talented and believed in himself [at Shinnecock Hills]."
25 de marzo 2019
|Casey retains Valspar Championship|
|De Ligt: Netherlands were scared to attack Germany|
|Matchwinner Magennis hails Northern Ireland´s team spirit|
24 de marzo 2019
|Germany still have work to do despite dramatic Dutch win, says Low|
|New England Revolution 0 FC Cincinnati 2: Saief-inspired visitors up to second|
|Steelers GM says Roethlisberger deal will ´probably´ be his last|
|Patriots star Gronkowski retires|
|Northern Ireland 2 Belarus 1: Magennis sends O´Neill´s men top of Group C|
|Netherlands 2 Germany 3: Late Schulz strike settles Group C classic|
|Cyprus 0 Belgium 2: Hazard marks 100th cap with a goal in easy win|
|Dislocated shoulder rules Richardson out of Australia-Pakistan ODI series|
|Maradona slams players and ´inept´ AFA president Tapia after Venezuela defeat|
|Deschamps not worried about latest Coman injury|
|He makes others play well – Southgate salutes Henderson ahead of 50th cap|
|Pant masterclass gets new Delhi era off to winning start|
|Finch hits another century as Australia win second ODI|
|San Marino 0 Scotland 2: McLean and Russell earn Group I spoils|
|Hazard set to win 100th Belgium cap|
|England have no weaknesses, says Montenegro coach|
|Williams hat-trick provides welcome boost for Wigan|
|Pretorius promotion pays off as Proteas stay perfect|
|Clinical Exeter beat Bath to seal play-off spot|
|Giggs hails blend of youth and experience|
|Pochettino ´nearly crying´ at Tottenham Hotspur Stadium opening|
|France winger Coman ruled out of Iceland clash|
|Ramos was kind, not dirty or rough - King|
|Wales 1 Slovakia 0: James hits winner as Giggs´ men start brightly|
|Edwards muses on convenience of ´hypothetical´ England job|
|Warner´s timely knock overshadowed by Russell´s fireworks in Knight Riders win|
|Australia quick Richardson suffers dislocated shoulder|
|He´s happy in Madrid – Umtiti not expecting Griezmann reunion at Barcelona|
|New Durham captain Bancroft will learn from ball-tampering scandal, says club´s CEO|
|Foden: I´m learning from Silva and Kompany|
|Ferguson and Gutherson shine in Eels triumph, Tigers win again too|
|Davies wants Bale back at Tottenham|
|Sterling has been the best in the Premier League, says Maguire|
|Hend reigns following dramatic finish at Maybank Championship|
|The NBA should fine the Heat! - Brooks says Wade is too good to retire|
|Durant: Nothing odd about Warriors´ 35-point loss|
|Reds ease past Brumbies|
|Kvitova, Wozniacki advance as Osaka bows out|
|Andreescu overcomes Kerber again to extend winning run|
|MLS Review: Zimmerman stunner sends Los Angeles top|
|Walker scores 36 points as Hornets shock Celtics in Charlotte|
|Kingsbury says ´everything´s on the table´ with number one pick|
|Zverev stunned by Ferrer as Cilic, Wawrinka lose|
|Half of Europe wanted him – Casemiro praises Madrid´s Militao capture|
|Irving joins Celtics greats in record book, then questions team´s strategy|
|Tite to consider Vinicius for Copa America|
|Casey clings onto lead ahead of Johnson|
|Sancho hails Sterling´s mentoring influence with England|
|Kean out to break records after netting maiden Italy goal|
|Grealish´s England chances would be helped by Premier League football – Southgate|
|Federer survives Albot test|
|Luis Enrique defends Morata after Norway misses|
|Glasgow and Munster march on in Conference A|
|Martinez salutes ´extraordinary´ Hazard ahead of 100th Belgium cap|
23 de marzo 2019
|Ramos: Luis Enrique has a wonderful philosophy|
|Schlupp puzzled by CAF mix-up|
|There is still nothing – Hazard dismisses reports of Real Madrid agreement|
|Lyon back to winning ways as Perpignan claim first home victory|
|McCarthy happy to take 1-0 win against Gibraltar|
|Hudson-Odoi and Sancho bringing ´raw mentality´ to England|
|Tite refusing to panic after woeful Panama draw|
|Italy 2 Finland 0: Young stars Kean and Barella inspire victory|
|Top seed Osaka dumped out of Miami Open by Hsieh|
|Spain 2 Norway 1: Ramos penalty gets La Roja up and running|
|Wasps keen on Edwards reunion|
|Liverpool title win would make me the happiest man in the world - Gerrard|
|Saracens cut Exeter´s lead with Harlequins victory|