The Giants kept Robert Thomas on the roster despite his being unavailable for the first five games of the season because of an undisclosed illness. On Sunday, he hopes to show why.

The defensive tackle who was claimed off waivers from the Panthers immediately after the final roster cuts were made in early September participated in his first full practice on Wednesday. It marked the first time in his Giants career that he did not even appear on the injury report.

“It’s a blessing to still be here through that all,” he said.

The Giants are Thomas’ sixth franchise since he came into the league as an undrafted free agent out of Arkansas in 2014. He’s been on the practice squad in Washington, Seattle, New England and Miami. He spent this preseason in Carolina.

The Giants could have easily cut Thomas when he developed his illness after arriving in New York. They didn’t. Instead they were patient and this week they waived DT Montori Hughes, a sign that Thomas is ready to take part in the rotation up front.

“They could have moved on quick but they saw something in me and they stuck with me,” Thomas said. “That’s a blessing. They’re a great organization.”

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Now Thomas wants to repay their faith in him.

“I have to,” he said. “Double.”