The Punter's De-Brief: Grillo wins in extra time after dramatic finale

• Drama aplenty in Texas

• Ruthless Larrazabal wins again

• Read my KLM Open preview here

• Read my Memorial tournament preview here

Although he trailed by a stroke with a round to go, Harris English was the 5/23.50 favourite on the exchange at the Charles Schwab Challenge, and he was matched at a low of 2.265/4 after he'd birdied the straightforward par five first, but that was as good as it got for the pre-event 110.0109/1 chance.

English boarded the bogey bus after missing a chance to birdie the second from 11 feet and he eventually finished tied for 12^th after being matched at a low of 1.21/5 to finish inside top-five and 1.152/13 for a top-ten finish.

Pre-event 950.0949/1 chance, Harry Hall, and Adam Schenk, who was generally a 400.0399/1 pop before the off, had led by one over English and by four over the rest of the field through 54-holes and Hall started perfectly with back-to-back birdies.

The Cornishman was matched at a low of 1.9520/21 but after his composed start, in extremely draining, tough, fast conditions, he inevitably started to leak oil, dropping shots every two or three holes, and his playing partner, Schenk, just never got going.

The world number one, Scottie Scheffler, put in a charge, thanks in part to a hole-in-one at the eighth and Victor Hovland briefly threatened but it was Argentina's Emiliano Grillo that emerged as the biggest danger to Hall on the back-nine when he birdied 12 and caught an outrageous break off the tee on 14 when his ball ricocheted off a tree into the fairway.

Grillo made the most of his good fortune, parring 14 and 15 before making a birdie three at the 16^th to take up the running.

Having been a well-supported 90.089/1 chance before the off (matched at 170.0169/1 when the market first opened), Grillo was matched at as low as 1.041/25 and for more than £30k at 1.051/20 when he stood on the 18^th tee with a two-shot lead before he hit a dreadful tee-shot that led to all sorts of drama...

Schenk, who I'd backed after round one at 70.069/1, was matched at as high as 600.0599/1 when he trailed by three with just three holes to play but he birdied the par three 16^th as Grillo was playing 18 and after the Argentine had double-bogeyed the last, and Harry Hall had driven into the water there also, Schenk's price hit a low of just 1.528/15!

Hall narrowly missed his par save from 23 feet on 18 so he finished alongside Scheffler on -7 - one shot shy of Grillo - and Schenk fractionally under hit his 15-footer for birdie and the title so we were into extra time.

Grillo caught another break off the tee when his drive bounced left out of the rough on 18 and onto the fairway at the first extra hole before both men narrowly missed birdie putts but that was nothing compared to the fortune he received on the second extra hole (the par three 16^th) when his tee-shot just cleared the greenside bunker.

Although Hall and Schenk had struggled under the pressure (both men shot over-par), it was hard not to feel at least some sympathy for them.

Grillo had gone almost eight years without a win, and he demonstrated perfectly why. It was an ugly finish with plenty of good fortune and I suspect he'd have shot over-par too had he began the day in front.

With the course playing so tough over the weekend, Grillo's winning total of 272 (-8) was the highest this century and that may stand for some time depending on how Colonial plays in 12 months' time.

Gill Hanse and his team are rolling in now to undertake an extensive renovation of the classical layout and it may play quite differently going forward.

Birthday Boy bags yet another title

My sole pre-event selection at the KLM Open, 80.079/1 chance, Pablo Larrazabal, went into the fourth and final round leading by a stroke and trading at around 7/24.50 but he looked in big trouble when he recorded a double-bogey six on the second hole after finding water twice.

Larrazabal trailed by two early on when the South African 400.0399/1 outsider, Deon Germishuys, birdied three in-a-row from the third and he was matched at a low of 2.56/4 on the back nine but he played the last 11 holes in level-par and he eventually finished tied for third.

Larrazabal's day turned in the right direction when he holed back-to-back birdie putts at six and seven from 30 and 40 feet but he didn't retake the outright lead until he made this brilliant birdie at the tough par four 15^th.

Adrian Otaegui, who was matched at a low of 3.39/4, birdied the 16^th to get within a stroke of Larrazabal and he put his fellow Spaniard under all sorts of pressure when he hit his tee-shot on the par three 17^th to just eight feet, but Larrazabal responded brilliantly, hitting his tee-shot to two feet!

Otaegui missed his birdie putt before Larrazabal tapped his in and he then birdied the 18^th for good measure and comfortable two-stroke win.

The pre-event favourite, Adrian Meronk, was matched at a low of 2.466/4 when he tied the lead briefly after back-to-back birdies at three and four, but that was as good as it got for the Pole.

Meronk bogeyed the ninth after birdying the eighth and he finished tied for fifth in the end so the only other player to trade odds-on throughout the week was 44.043/1 chance, Jorge Campillo, who finished tied for 29^th!

Campillo was matched at just 1.625/8 on Saturday as he stood on the eighth tee with a five-stroke lead so it's fair to say he was a bit disappointing after that.

Larrazabal, who turned 40 just over a week ago, has turned himself into a serial winner.

He's now won nine times on the DP World Tour, and this was his second in three starts and his fourth in 15 months.

The DP World Tour is in Germany this week for the Porsche European Open, which I've previewed here, and the PGA Tour moves from Texas to Iowa for the Memorial Tournament, which I've previewed here.

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