Hello and welcome to LIVE updates of the men's second round clash between fourth seed, Stan Wawrinka and Argentine, Juan Martin Del Potro on Centre Court.

GAME, SET AND MATCH! - WAWRINKA 6-3 3-6 6-7 3-6 DEL POTRO. A real triumph for Juan Martin Del Potro as he puts aside a two year plus absence from the centre stage of majors to sink the fourth seed in two hours and 44 minutes. He serves it out in style and thoroughly deserves it, combining big serving and some thumping forehands with his restyled slice backhand which was more effective than anyone expected.

BREAK! - WAWRINKA 6-3 3-6 6-7 3-5 DEL POTRO. Stan capitulates as he tightens up under the scoreboard pressure. A drive long of the baseline hands Delpo the break at 30-40 and the Argentine will now look to serve out the match.

WAWRINKA 6-3 3-6 6-7 3-4 DEL POTRO. The Argentine has served well today. He's staying in front and not allowing Wawrinka to dictate and unleash off either flank.

WAWRINKA 6-3 3-6 6-7 3-3 DEL POTRO. A key hold for Stan. Delpo goes for the killer blow from deuce but can't convert the BP as Wawrinka unleashes that backhand down the line to dig himself out of a hole. All square and still finely poised.

WAWRINKA 6-3 3-6 6-7 2-3 DEL POTRO. Delpo doing enough to keep his nose in front via the scoreboard advantage. He holds to 30, conjuring up the big serves when he needs them most.

WAWRINKA 6-3 3-6 6-7 2-2 DEL POTRO. A super fast service game from Stan. We've gone back to the quickfire games after that run of breaks in the second.

WAWRINKA 6-3 3-6 6-7 1-2 DEL POTRO. Delpo hammers down the big serves and Stan misfires when he does get near them which results in a simple enough love hold.

WAWRINKA 6-3 3-6 6-7 1-1 DEL POTRO. Stan holds to 30 and moves level in the fourth. The Swiss looks out of sorts and is finding Del Potro hard to handle.

WAWRINKA 6-3 3-6 6-7 0-1 DEL POTRO. The Argentine offers Stan a glimmer of hope as he fights to deuce from 40-15. But Delpo slams the door shut as he forces the error from Stanimal by racing into the net. Scoreboard advantage for the underdog.

SET! - WAWRINKA 6-3 3-6 6-7 DEL POTRO. The comeback kid is on the verge of some headlines now. From one set down to 2-1 up. The Argentine takes the TB 7-2 as Stan's radar goes AWOL. The Swiss is in trouble and will need to go the distance if he is to avoid an early exit here.

TIE BREAK! - WAWRINKA 6-3 3-6 6-6 DEL POTRO. It'll be a third-set TB as JM pulls out a couple of big serves from 30-30 to avert danger and keep his hopes alive.

WAWRINKA 6-3 3-6 6-5 DEL POTRO. A stunning pass down the line from Del Potro isn't enough to put Stan off his game as the Swiss canters to a routine hold to 15. Over to Delpo now. Can he secure a TB or will Stanimal pounce at the death?

WAWRINKA 6-3 3-6 5-5 DEL POTRO. Pressure, what pressure? Delpo rattles down the big serves and finishes with a dismissive forehand winner to clinch a simple love hold. Are we heading to a TB?

WAWRINKA 6-3 3-6 5-4 DEL POTRO. Stan powers down a 10th ace on his way to a hold to 15. Whoever blinks now loses this set.