Robinson, acquired from the Dodgers in the three-team deal involving Erik Bedard at the July 31 Trade Deadline, hit just .210 in 143 at-bats for Seattle. But he said he worked hard on using his hands more during the offseason and is eager to put that to the test in batting practice.
"I think I got away from what I do best," he said. "But I'm putting last year behind me. This is a fresh start and I'm looking forward to getting after it."
Robinson said the death of teammate Greg Halman in the Netherlands in November was a sharp reminder of how fleeting life can be.
"As a human race, we seem to take a lot of things for granted," said the youngster. "That hit hard. I didn't get to know him as well as I wanted, but I know he was a good guy, a hard worker and a really good player."
Robinson spent much of the offseason in Arizona working on his game, and now will enter the competition for playing time among a large group of Mariners outfield candidates that includes Mike Carp, Casper Wells, Michael Saunders, Carlos Peguero, Johermyn Chavez and Chih-Hsien Chiang looking to land the left field job.
Position players aren't required to be in camp until Friday, but Robinson joined an early group that now includes Saunders, Peguero, Justin Smoak, Kyle Seager, Dustin Ackley, Mike Carp, Nick Franklin, Alex Liddi and Munenori Kawasaki.