Krebs, 21, tallied 15 points (4+11) in 18 games with the Amerks upon being acquired from the Vegas Golden Knights in November. He played his final 48 games for Buffalo, tallying 22 points (7+15).
Samuelsson, 22, tallied 15 points (2+13) in 22 AHL contests this season. He had 10 assists in 42 games with the Sabres, at times playing on the top defense pair alongside Rasmus Dahlin.
Samuelsson is day-to-day with a lower-body injury but will continue his recovery in Rochester, he told reporters Sunday.
The Amerks earned a postseason berth on the final day of the regular season with Toronto's regulation loss to Belleville. Rochester won the prior afternoon thanks in part to a three-assist performance by Casey Fitzgerald, who was sent down from Buffalo that morning.
"We just can't put too much of that pressure on ourselves that as soon as we get down, all of a sudden things are going to be amazing," Krebs said. "It's a really good league, there's a lot of good players. Obviously, we want to make the most of this opportunity to be the best we can."
