By Tzvi Machlin The reigning Western Conference champion Phoenix Suns find themselves in an all-or-nothing Game 7 against the Dallas Mavericks tonight. Phoenix had the best record in the NBA this season at 64-18. No other team had more than 56. But the playoffs have been surprisingly challenging for them thus far. It took them six games to beat the New Orleans Pelicans and they blew a 3-1 series lead against the Mavs to force Game 7. Meanwhile, the Mavericks once again reached the playoffs on the back of all-world superstar Luka Doncic. Thankfully, the rest of the team stepped up when he misse…