Matthews finished ahead of the overall average (21.1 pounds per square inch to 20.5) in the jump station force plate that measures lower-body strength, and finished a minute longer than the 2016 average in the VO2 max.
"The jump kind of shows explosiveness and leg power, so that's definitely stuff I want to prove I have," Matthews said.
His peak power output (watts per kilogram) on the Wingate Cycle Ergometer test, a 30-second all-out sprint on a stationary bike that measures a player's explosiveness, was 18.1, higher than the 2016 average (15.8).
"I think it's a relief to get the testing done," Matthews said. "I wouldn't say you're dreading it all week, but you're not looking forward to it either. You know you're going to do it so it's kind of in your mind all week, but it's nice to kind of get it over with."
Matthews went barefoot in the Y-Balance test to get more traction, and he beat the overall average in the standing long jump (106 inches to 104.6 inches).
"The Wingate test was the toughest," Matthews said. "They're in your ear screaming the whole time, but I think it helps because you hit a wall going 15 seconds into the sprint. It gets very tough, so I think it's beneficial to have someone there urging you on."
Matthews and Laine will next get together as guests of the NHL at Game 4 of the Stanley Cup Final between the San Jose Sharks and Pittsburgh Penguins in San Jose on Monday. Then it's back home for some rest before the draft.
Neither player expects to do much once returning home.
"I was quite exhausted after the season since I played the whole year," said Laine, who is from Tampere, Finland. "I was tired and had no time to prepare for these tests, so I'll probably go home, get some sleep and watch television."
Matthews, from Scottsdale, Ariz., is also looking forward to some relaxation before the next big day in Buffalo.
"I'll probably play some golf with my sister and lay by the pool when I get back home," Matthews said. "It's getting a little warm in Arizona this time of year so there not much more you can do. My golf game is not very good, but my sister is a good golfer; she ruins my confidence when I play her."