His control of the defence and towering heading ability was a crucial part of the puzzle in the run in to the end of the 2011/12 campaign that saw Latics impress so well.
The 2012/13 season saw Caldwell make just 24 appearances as he battled against injury, which culminated in double hip surgery at the end of the season.
Latics' club captain scored once in the 12/13 campaign against Southampton in a 2-2 home draw in February but, featured just five more times.
The defender has won Scottish Premier League titles over his career and even played in the Champions League but in May 2012 he was given the highest honour at Latics when he was named Wigan Athletic Player of the Year after capturing the hearts of the fans.
Caldwell arrived in January 2010 from Celtic, a club that served him well as he earned two SPL winners’ medals, and both the Scottish FA Cup and Scottish League Cup. Whilst in Glasgow, he also won individual honours as 2009 Scottish Football Writers’ Footballer of the Year and 2009 SPL Player of the Year after an inspirational season as captain of Celtic.
Before Celtic, Caldwell enjoyed two seasons under Tony Mowbray at Hibernian after learning his trade at Newcastle United as a trainee alongside older brother Steven Caldwell who he also teamed up with in the 2010/2011 season at Latics.
At Latics, Caldwell made his debut in a 2-0 victory of Wolverhampton Wanderers in January 2010 and scored his first goal for the club in the same month against Blackburn Rovers despite losing the game 2-1.
His strength and power in the air have always made the Scottish international an attacking threat and the 2011/2012 season he scored three times, against Blackburn in a 3-3 home draw, against Latics rivals Bolton Wanderers at the Reebok Stadium and then in March 2012 he made Latics history with the winning goal at Anfield to secure Latics first ever win away from home against Liverpool.
Internationally, Caldwell made his debut for Scotland in 2002 against France in a 5-0 defeat but got his revenge against them in 2006 with the winner in a 1-0 Euro 2006 qualifier at Hampden Park.