Wesolowski, 23, started and played the full game in midfield as three goals in the final quarter of an hour sealed promotion for Posh.

The Sydney-born midfielder, who is uncapped at senior international level, has previously played in England's second tier with Leicester City.

In Italy's Serie B, Socceroo Carl Valeri put in a full shift in midfield and picked up a yellow card as Sassuolo avoided the drop and the play-offs after a 3-2 win over Reggina on the final day of the season.

Elsewhere, Adrian Madaschi did not play as relegated Portogruaro lost 3-2 to Crotone on Sunday.

In Russia's Premier League, Luke Wilkshire was back in the Dinamo Moscow starting line-up, playing a full game, as they won 1-0 at Kuban Krasnodar on Sunday.

In Portugal's Liga de Honra, Jason Davidson did not play as Sporting Covilha scored a late goal to defeat Desportivo Aves 1-0 and subsequently survive the drop.

In Czech Republic's Gambrinus Liga, Kerem Bulut did not play as Mlada Boleslav finished the season off with a 2-0 win over Usti nad Labem on Saturday.

In Korea's K-League, Luke DeVere scored the equaliser for Gyeongnam FC as they drew 1-1 with Jeju United on Sunday.

DeVere, who has been a regular at the back for Gyeongnam since moving to Korea, scored on 59 minutes and played a full game.

Elsewhere, Sasa Ognenovski put in a full shift as struggling Asian champions Seongnam Ilhwa got back to winning ways with a 2-0 victory over FC Seoul on Sunday.

Meanwhile, Robbie Cornthwaite played a full game as Chunnam Dragons lost 1-0 at home to Ulsan Hyundai, while Iain Fyfe was absent as Busan I'Park drew 1-1 with Gwangju FC on Saturday.

In Japan's J.League, Socceroo Joshua Kennedy scored his first goal since early March as Nagoya Grampus defeated Avispa Fukuoka 5-2 on Sunday.

Kennedy, who missed the past month due to injury before returning in the AFC Champions League in midweek, scored the opener on 23 minutes.

The Aussie striker, 28, has been included in the Socceroos squad for the upcoming New Zealand and Serbia friendlies.

Elsewhere in Japan's J.League, Socceroo Matt Spiranovic played a full game as Urawa Red Diamonds drew 1-1 with Albirex Niigata while Alex Brosque and Eddy Bosnar both put in full shifts in Shimizu S-Pulse's 0-0 derby draw with Jubilo Iwata.

In Japan's J2.League, Mark Milligan played a full game as JEF United came from two goals down to win 3-2 over Oita Trinita on Sunday, while Jade North was a 90th-minute substitute as FC Tokyo won 4-1 at Kyoto Sanga on Saturday.

In China's Super League, Alex Wilkinson and Bruce Djite's Jiangsu Sainty claimed a much-needed 1-0 win over Dino Djulbic's Shaanxi Chanba on Sunday.

Wilkinson put in a full shift at the back, helping keep a clean sheet, while Djite was a 90th-minute substitute. Djulbic was absent for Shaanxi.

Elsewhere, Adam Kwasnik played a full game as Chengdu Blades lost 4-1 at Shanghai Shenhua, while Dean Heffernan also put in a full shift as Liaoning Whowin lost 2-0 at Qingdao Jonoon.