Popular Aussie stopper Mark Schwarzer is arguably Boro's greatest-ever goalkeeper having achieved plenty during his time on Teesside.
He joined the club from Bradford City in 1997 for £1.2million, only four months into his time at Valley Parade.
Schwarzer's Boro debut was the semi-final of the League Cup against Stockport County - where we would go on to reach the final.
He soon established himself between the posts for Boro, and was instrumental in us reaching the Carling Cup final in 2004, coming to the fore in penalty shoot-outs against Everton and Spurs and played in the final at Cardiff's Millennium Stadium where we ended a 128-year wait to lift our first major trophy.
Some important saves during his time at the Riverside, Schwarzer, the club's most capped player with 51 for Australia, produced one stop to secure Uefa Cup football.
European football hinged for Boro and Manchester City on a stoppage time penalty on the final day of the 2004/05 season.
Schwarzer guessed correctly to deny Robbie Fowler from 12 yards, with the save securing our highest finish in the Premier League and a place in the Uefa Cup.
The glovesman featured for the Socceroos at the 2006 World Cup, where he earned rave reviews, having played in Boro's Uefa Cup final appearance a few months earlier.
His time with Boro came to an end in 2008, with his final game the 8-1 rout of Manchester City, with Schwarzer joining Fulham.
With Fulham he would reach the Europa League final in 2010, but they were narrowly beaten by Atletico Madrid.
After leaving Craven Cottage he became back-up at Chelsea and had the same role with Leicester City, picking up a Premier League winners' medal with the Foxes in his final year as a player before becoming a pundit.