6'4 = 193.04 cm. According to the premier league Actim stats:
9 Davenport (Tottenham) 1.93
10 Diop (Fulham) 1.93
11 Distin (Man City) 1.93
12 Friedel (Blackburn) 1.93
13 Hall (Wigan Athletic) 1.93
14 Robinson (Tottenham) 1.93
15 Samaras (Man City) 1.93
Taken from the Tallest players in the prem section.