Robinson blasted a three-run homer in the first inning, then added a two-run single in the seventh as the Hogs broke open a one-run game. Robinson said both pitches were fast balls, but they weren't all that swift.
"I think the big problem we had tonight was the speed of the pitches," Arkansas captain James McCann said. "The velocity was way down from what we had been seeing and that was tough for us."
Indeed, UT-Martin starter Willie Frederick, a first-time starter, lasted 105 pitches and five innings, mostly because his pitches were slow and slower.
"It was tough to time them," McCann said, noting the Hogs had seen nothing but fast balls in the 90 mph range for the last six games against Florida and South Carolina.
Robinson said of the homer, "It was a fast ball. I was looking fast ball and he left it in the middle of the plate. The single was an elevated fast ball, too."
The Hogs, ranked No. 23, improved to 34-17. They sent UT-Martin home at 18-32.
Brandon Moore (4-1) got the victory despite pitching just three innings. He gave up both Skyhawk runs in the third inning. He was credited with the win because he was on a pitch count as the Hogs conserved their hurlers in anticipation of the SEC series with Ole Miss set to begin Thursday.
Cade Lynch pitched three innings, Colby Suggs went two frames and Nolan Sanburn got the final inning.
"Moore pitched well in the first two innings," Arkansas coach Dave Van Horn said. "I thought he was up with his pitches in the third. Lynch had two innings and one not as good. Suggs was very good. Sanburn had a grounder that went for an error and was down the middle with a fast ball that got hit. Then he looked like he was bearing down and pitched well."
Van Horn was proudest of the way the Hogs scored their runs in the first and seventh, both times with two outs.
"That's what I liked about it," he said. "We got it going with two outs. Robinson got two big hits."
Van Horn said the stage is now set for the big series with Ole Miss. There is a four-way tie for first in the West with the Hogs and Alabama, Auburn and Mississippi State all at 13-14. Ole Miss is one game back at 12-15. LSU is still in it at 11-16.
"Everybody is still in it and everybody still could fall out of the conference tournament," Van Horn said. "I've never seen it like that as far as one through six. I don't know if it has ever happened.
"Ole Miss is like everyone else in the West. They've played well in spots and then there are some games that probably they let get away from them. That's everyone in the West."
McCann said it will be an interesting weekend.
"I know we are fired up for it and think we are going to win," he said. "I'm sure they are just as fired up as we are. That's going to make it fun. It is fun every weekend in the SEC and this will be just like all the rest of the games."