RICHMOND midfielder Josh Caddy is hopeful scans on Monday will clear him of serious damage to his left hamstring. 

The 24-year-old pulled up lame after contesting a mark on the wing in the closing minutes of the first quarter against Geelong and jogged off the ground. 

Caddy went to the rooms for assessment and donned a tracksuit top at quarter-time, sitting out the rest of the contest. 

He had ice applied high up on his left hamstring after the main break. 

"I've never done one before, but I don't think it's a real bad one," Caddy told Channel Seven on Sunday. 

"I'm pretty confident it's on the minor end." 

Caddy started brightly against his former side, kicking the opening goal of the match.

Geelong big man Rhys Stanley picked up a right calf injury early in the final quarter against Richmond and took no further part, placing a cloud over his availability for the finals. 

The 26-year-old began the last term up forward and appeared to pull up sore after competing for the ball inside 50.

Stanley went off the field for assessment and was clearly hobbling after the game.

Sydney defender Nic Newman hyperextended his right knee against Fremantle in a freak accident as teammate Kurt Tippett laid a tackle and kicked him with his outstretched leg.

The 24-year-old could not put any weight on his right leg after the third-quarter incident and was carried off the ground by the medicos. 

Newman had his knee strapped and performed run-throughs along the boundary line, but ultimately sat out the match with his leg wrapped in ice.

Adelaide skipper Taylor Walker and vice-captain Rory Sloane will be monitored this week after the pair suffered injury scares against Essendon. 

Walker reached for his right boot after it appeared to get caught under Essendon defender Patrick Ambrose in a marking contest early in the first quarter.

The 27-year-old captain remained on the ground and was assessed in the rooms later in the quarter. 

Sloane, meanwhile, hobbled off the ground late in the third term with an apparent lateral ligament sprain after Bombers defender Matt Dea applied pressure and came into contact with his left knee.

The star midfielder went straight to the rooms and performed a fitness test at three-quarter time, beginning the final term on the ground with his knee strapped.

In a positive sign, both Walker and Sloane finished the game.

The Crows have a six-day break ahead of Friday night's clash with Sydney at Adelaide Oval. 

Gold Coast defender Sean Lemmens badly rolled his right ankle as he slipped and was tackled by Brisbane Lions forward Michael Close in the final term, all but ending his season. 

The 22-year-old walked off slowly in the hands of trainers and spent the last part of the match with the medical staff.

In other injury concerns in round 21:

- St Kilda midfielder Koby Stevens was ruled out with concussion after clashing heads with Melbourne onballer Angus Brayshaw in the first term. Stevens also suffered a burst eardrum in the incident, while Brayshaw, who has had his own concussion battles, emerged unscathed and played on.

- St Kilda half-forward Jack Billings received a poke to his left eye in the first quarter against Melbourne. The 21-year-old applied ice to the injury during each of the breaks and played out the game with a badly swollen eye.

- Melbourne defender Oscar McDonald was involved in a heavy collision in the final term against St Kilda, but finished the game. 

- North Melbourne captain Jack Ziebell did not make the trip to Tasmania to take on Hawthorn due to a foot injury. 

- Essendon forward Anthony McDonald-Tipungwuti reached for his left hamstring after attempting to kick the ball off the ground in the third quarter against Adelaide. The 24-year-old was assessed at the interchange area and played on. 

- Essendon forward Joe Daniher hurt a finger in the third quarter against Adelaide and returned after having it strapped. 

- Geelong midfielder Sam Menegola finished the game against Richmond with a busted nose and a cut above his left eye. 

- Geelong forward Daniel Menzel received treatment at the interchange area in the final term against Richmond for a corked left leg. 

- Geelong defender Tom Lonergan had his right knee examined in the third quarter against Richmond after landing on his knee in a tackle. The 33-year-old returned and got through the match. 

- West Coast forward Jack Darling had his left ankle re-strapped late in the first quarter against Carlton following a marking contest at half-forward and played out the match.

- Greater Western Sydney midfielder Dylan Shiel hurt his right shoulder in a bump from Western Bulldog Jake Stringer before half-time. The 24-year-old, who has had long-running shoulder problems and plays with his upper arms heavily strapped, shook off the pain and played on.

- Western Bulldogs small Luke Dahlhaus was left with a bloodied mouth after receiving a stray boot from Greater Western Sydney forward Toby Greene in the third term. Dahlhaus came off under the blood rule and returned.

- Fremantle veteran David Mundy received a knee-on-knee knock from Sydney midfielder Dan Hannebery in the first quarter. Mundy had his left knee strapped, performed run-throughs and returned before quarter-time.