By Chris Smith For a team to rise from near the bottom of the table to contenders at the top in just a year, it needs a special performer to step up. For Austin FC this season, that has been Sebastian Driussi. The Argentine midfielder has, at times, carried his team on his back, proving a goalscoring machine and a creative linchpin with 22 goals and five primary assists in 34 regular-season appearances. That’s even a marked improvement from the five goals and eight assists in 17 games last year, when Driussi only joined halfway through the season. But then, given his pedigree, we shouldn’t hav…