Former Test opener Ed Cowan is fully aware 90s are not enough if he’s to reignite his Test career.

Former Test opener Ed Cowan was left ruing another missed opportunity after falling agonisingly short of a century on day one of Tasmania’s Sheffield Shield clash with Queensland at Bellerive.

A five-hour, 223-ball knock of 93 ensured a respectable start for the Tigers, who went to stumps at 5-244.

Cowan became the competition’s fourth highest runscorer for the season with 582 at 44.77.

But the 31-year-old is fully aware his conversion rate of one ton and five 50s needs to improve if he is to reignite an 18-match Test career.

“You bat for five hours and you don’t get a hundred, you’re a little disappointed,” he said.

“You need 150-plus, 200 (scores) to really put your name up.

“I think I’ve been really consistent but just haven’t had those really big scores.”

In bowler-friendly conditions, Cowan took 158 balls and 241 minutes to pass 50, his first boundary coming after 78 deliveries.

But he put on 143 with the recalled Steve Cazzulino, whose 63 came from 188 balls, before falling lbw to Alister McDermott (2-35) at 4-176.

“It was hard work and I was happy I had the patience to wait for conditions to be in my favour to score some runs,” he said.

“It was one of those days, you’re happy with your mental discipline more than anything.”

Tasmania were in a commanding position at 1-162 before a reverse-swing double strike from Ben Cutting (2-41) reduced the home side to 3-162.

Last season’s Shield final opponents both need outright victory to stay in touch with the ladder leaders.

McDermott said day one honours had been evenly shared.

“We were hoping maybe to keep them to a little bit less,” he said.

“But we were really happy with getting four wickets in that last session.”

Ben Dunk will resume unbeaten on 47 with Tim Paine on 12.