Baykal started his children's football by local club FC Bethlehem and after a few years moved on to the youth department of SC Bümpliz 78.
[2] Baykal then moved to Thun in summer 2003, under head coach Hanspeter Latour he made regular appearances in their first team.
They finished the 2003–04 Swiss Super League season in sixth position and one year later, under new head coach Urs Schönenberger, as runners-up.
Basel had just won the championship for the second time in a row and Gross had to replace a number of midfielders who had left the club.
A last-minute goal from Zürich's Iulian Filipescu meant the final score was 1-2 in favour of the away team and it gave FCZ their first national championship since 1980–81.
In summer 2010 Baykal signed a two-year contract, dated to the end of June 2012, with Karşıyaka Spor Kulübü in Turkey.