Please capitalize where necessary: ergonomic seat with comfortable backrest
A: Ergonomic seat with comfortable backrest

Please capitalize where necessary: pokerstars live and/or the tournament director or tournament staff may penalize any act that, in the sole and absolute discretion of pokerstars live and/or the tournament director or tournament staff, is inconsistent with the official rules or bests interests of the event.
A: PokerStars Live and/or the Tournament Director or Tournament Staff may penalize any act that, in the sole and absolute discretion of PokerStars Live and/or the Tournament Director or Tournament Staff, is inconsistent with the official rules or bests interests of the Event.

Please capitalize where necessary: 36:14 moreover all the chief of the priests, and the people, transgressed very much after all the abominations of the heathen; and polluted the house of the lord which he had hallowed in jerusalem.
A: 36:14 Moreover all the chief of the priests, and the people, transgressed very much after all the abominations of the heathen; and polluted the house of the LORD which he had hallowed in Jerusalem.

Please capitalize where necessary: in 1908 ostrowski, then a fifteen year old schoolboy:
A:
In 1908 Ostrowski, then a fifteen year old schoolboy: