It's been long time without club football here hehe.
First thoughts are, that besides Belchatow-Leczna and Cracovia-Legia there is absolutely no signs that underdogs should get smt. Widzew, Lks played totaly terible last two league cup games and are weaker + especially Lks is hitted by injuries/suspensions. Same goes to Wisla Plock + their main sponsor is considering to leave football and concentrate on handball team(wich is sucesfull btw). Arka is another team bothered by injury crisis, and they are involved in fixing scandal (may be punished even with relegatiion) - no match with on fire lately being without any injuries Korona. Odra lost their best striker wich scored most goals for them in autumn, and they will have hard task facing strong Lubin (again with only one player doubtful).
Same with Zabrze, as they sold Aleksander, and signed one funny striker wich is always injured from Wisla Krakow (he claimed that after few seasons of strugling with injuries, he's finally fit, and ofcourse got injured in preseason
). Should be first away win for Wisla imo, as they looked better than i though vs Lubin on weekend in league cup (won 1:0).
I would watch out for Leczna a little, and Cracovia at home (especially vs Legia) is always no bet - drawish afair. Huge archrivals game, and as always Legia is shite in first games.