Shane Lowry and Tyrell Hatton learn punishment for foul-mouthed rants during US PGA

Tyrrell Hatton and have both landed themselves in hot water for their behaviour at the . The pair launched into foul-mouthed explosions during the second round at Quail Hollow, and both are in line for fines.

Hatton and Lowry were among a number of stars to find the going tough on day two. only just made the cut on +1, with Hatton two strokes clear of the Northern Irishman, but Lowry found himself the other side of that line.

, 33, began his round on the back nine and ran into difficulties on the 18th. cameras picked up the Brit yelling "“Piece of s***" after a wayward tee shot, after a four-letter Hatton outburst in the opening round had already prompted an apology from the broadcaster.

Lowry was seen flipping a middle finger at the hole during a bogey as part of his round, with the Irishman also heard saying "f*** this place". He went round in par in the second round, but his round one struggles meant he still missed the cut.

Both Hatton and Lowry are expected to receive fines for their behaviour. And, speaking after carding a round of 73, the former shed some more light on a difficult round.

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“You tell me, you’ve seen it," Hatton replied when asked to clarify his language on 18. “Either way it wasn’t my finest moment on the course but I mean yeah, running hot in the moment I’m pretty good at sometimes saying the wrong thing. So yeah, I’ll leave it at that.”

He added: “A great birdie on 17 but a poor tee shot really on 18 and then made some bad decisions. Making seven there was tough and I just unfortunately wasn’t able to make other shots coming back on the back nine and it ends up being a frustrating day.”

Hatton had made a strong start, carding a three-under 68 in the opening round to leave him tied for ninth. Matt Fitzpatrick was also in that group and fared far better, repeating the trick to sit in second place at the halfway stage.

Jhonattan Vegas remains out in front, following his opening-round 64 with a 70. He and Mathieu Pavon will form the final group on Saturday, with the Frenchman posting -6 on day two to fire himself into the mix.

"Having been in this position before is a huge advantage," said Fitzpatrick, a former US Open champion. "I feel like there's less pressure. I want to win another major and I'm looking forward to being in contention again."