Swansea City left-back Neil Taylor has described his teammate Jefferson Montero as an extremely difficult opponent.
The Ecuador winger started the season with a solid performance against Chelsea and followed up with another man-of-the-match showing against Newcastle United.
The 25-year-old was a constant thorn in Daryl Janmaat's side and forced him into a series of cynical fouls which eventually led the Magpies defender to pick up a second booking after just 41 minutes, reducing the visitors to ten men in Swansea's 2-0 home win.
"I don't have any sympathy for anyone marking Jeff because I have to go up against him in training," said Taylor. "But in training we don't play in a particularly big space as we play small-sided games - it's easier to cope with him.
"So come Saturday, it feels like he's being let out of a cage really with all that extra space.
"He is a great guy - we are trying to improve his English so we can communicate better - but I think it is getting worse. He is a very laid back fellow and doesn't move or say much in the changing room until about a minute before kick-off - then he's up and going and off sprinting at 100mph. That's Jeff."