Richmond coach Adem Yze has provided an update on the injuries suffered by forwards Jasper Alger and Harry Armstrong during Saturday's clash with Fremantle.

Yze said second-year forward Alger had likely strained a medial ligament after an incident in the second quarter, while young goalkicker Armstrong had suffered a foot injury that will need to be assessed.

"(Alger) has probably strained his medial. It is unfortunate because he was looking pretty dangerous for us, he was in good form, it was the reason why he got into the team, he played really well in the VFL last week. That was unfortunate for him to go out because he does provide an aerial threat for us, he can play tall, he is a talented kid and it is unfortunate that we lose him," Yze said of Alger.

The coach added he hopes Armstrong's injury is only minor. 

"(Armstrong's) obviously going to be a huge part of our future. Hopefully it's on the minor end and it's just precautionary, so we'll find that out in the early part of the week," Yze said of Armstrong.

Yze was pleased with the way the Tigers started the game, challenging the Dockers through the first half and leading by six points late in the second quarter.

But his young side conceded five unanswered goals through the third term, however, as part of a run of eight from the Dockers.

"The wheels just fell off into the third. That wasn't up to standard. We couldn't get out of our back end and that's been a couple of weeks in a row now," Yze said.

"It's a bit of a trend across the comp, watching even some of the best teams, you can get stuck in your back end, and especially with point kick ins, and we did.

"We look like we just lost our way a little bit in that second half, which is disappointing.

"We'll take the positives out of the first half, but then be really disappointed with our second half, because that wasn't good enough."