Reports in Turkey before the August 2008 transfer deadline stated that Sunderland were interested in securing Semih's signature, a deal which never looked likely given Semih's incredible recent form. Most recently, he secured an away victory in the 2nd round of the Champions League qualifiers, guaranteeing a place for his team in the third knockout phase of the Champions League. His four goals against MTK Budapest on 6th August 2008 meant that Semih became only the second Turkish player after Fethi Heper to score four goals in a single European match...
In the quarter-finals match versus Croatia, Şentürk saved the Turkish squad from a late 1-0 defeat to Croatia, scoring a last-second equaliser in the 122nd minute. Just three minutes past Croatia's goal, Turkish goalkeeper Rüştü Reçber cleared an offside free-kick long into Stipe Pletikosa's area, giving Şentürk the opportunity to score with a powerful left-foot shot. Turkey went on to win the subsequent penalty shoot-out 3-1 and advance to semi-finals, with Sentürk taking and scoring the second spot kick.
The semi-finals match against Germany turned out to have a thriller ending in which Sentürk played a key role. In the 86th minute, just 7 minutes ahead of Miroslav Klose's goal (which gave Germany a 2 to 1 advantage), Sentürk intercepted a low cross provided by team-mate Sabri Sarioglu and scored a crucial equaliser. However, his side went on to be defeated as Germany's left-back Philipp Lahm managed to score a decisive goal in the 90th minute, which knocked out Turkey from the competition. After EURO 2008 finished Semih Senturk received the name super sub.
|1.||May 29 2008||MSV-Arena, Duisburg, Germany||2 - 0||2 - 0||Friendly|
|2.||June 11 2008||St. Jakob-Park, Basel, Switzerland||1 - 1||2 - 1||UEFA Euro 2008|
|3.||June 20 2008||Ernst Happel Stadion, Wien, Austria||1 - 1||1 - 1||UEFA Euro 2008|
|4.||June 25 2008||St. Jakob-Park, Basel, Switzerland||2 - 2||2 - 3||UEFA Euro 2008|
|5.||September 6 2008||Hrazdan Stadium, Yerevan, Armenia||0 - 2||0 - 2||2010 FIFA World Cup qualification|