Players visiting Sin City certainly don’t want to hear this, but the powers that be at the Nevada Gaming Control Board now say Las Vegas face masks must be worn at certain games that do not separate players with plexiglass. Bummer. The order comes down as Nevada has seen an explosion of new Coronavirus cases, and it adds to the existing health and safety policies for all relevant venues. It is no longer a matter of choice for guests given the proved effectiveness of masks. So, if you choose not to wear a mask it may be better to stay…