I'll give credit to Seppi for coming this far, and fighting this hard to hold serve, but he's done.
Djoko is going to break, cruise the rest of the set, and Seppi has 0 chance in a fifth
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http://img.imgcake.com/RegaroUlquiorrapngse.png
http://img.imgcake.com/regthatchertabletpngyd.png