Tony Jas pushed hard in Rotterdam before outworking Przemyslaw Runowski

Inside a loud Boxing Gladiators crowd, Tony Jas went six hard rounds with experienced Polish fighter Przemyslaw Runowski and had to earn almost every minute of it. No quick knockout. No comfortable cruise. Just a tense fight where timing, conditioning and composure slowly made the difference.

By the final bell, Jas looked exhausted but satisfied. The kind of tired that tells you real work happened in there.

Runowski made things difficult from the opening round

From the start, Runowski came forward aggressively and refused to let Jas settle into rhythm. The Polish veteran mixed body shots with awkward pressure and forced the Dutch fighter backward several times during the early rounds.

That surprised some people at ringside.

Jas is usually most dangerous when he controls distance behind his jab, but Runowski disrupted that repeatedly by stepping inside and turning exchanges messy. One sequence in round two drew a big reaction from the Rotterdam crowd after both fighters traded hooks near the ropes without backing down.

The pace stayed high throughout all six rounds.

FSI247 recently covered another intense night at Boxing Gladiators in Rotterdam, and this fight carried that same gritty atmosphere from the opening bell.

Jas adjusted when the fight got uncomfortable

What stood out most wasn’t power. It was patience.

Instead of forcing knockouts once the fight became difficult, Jas slowly adapted. He started timing Runowski with cleaner counters and landed sharper combinations during the middle rounds, especially with the right hand over the jab.

By round four, you could feel momentum changing.

Watching from ringside, one thing became obvious: Jas stayed calm even when Runowski kept pressing forward. Between rounds, his corner barely raised their voices. No panic. Just small corrections and steady breathing.

That composure mattered late.

Runowski continued fighting hard, but Jas looked fresher in the closing rounds and finished stronger, which likely sealed the decision clearly on the cards.

Bigger opponents now firmly in sight

After the fight, Jas made it clear he wants stronger opposition next.

Honestly, he probably earned it.

Six competitive rounds against a durable and experienced opponent like Runowski tell you more than a quick stoppage against overmatched competition ever could. These are the types of fights young contenders need before stepping into bigger national or international bouts.

According to BoxRec rankings and records, Runowski has shared the ring with several respected European-level fighters over the years, so there was real experience standing across from Jas in Rotterdam.

FSI247 also recently highlighted rising Dutch boxing prospects pushing toward bigger fights, and Jas is starting to fit naturally into that conversation.

The performance wasn’t flawless.

But sometimes the fights where a boxer struggles a little tell you far more about his future than the easy nights do.