the Rio, including a $450 million proposal by Penn National Gaming. Out of Harrah's 10 local properties, 9 of them were on the Las Vegas Strip, with the Rio as the outlier. The Rio's off-Strip location made it difficult for Harrah's to market the resort to customers of its other properties. Furthermore, the Rio had lost the popularity it had under Marnell's ownership in the 1990s. The property had received numerous complaints relating to maintenance and service, which employees blamed on cost-cutting measures by Harrah's. However, an imminent sale did not occur, and the Rio remained under the same ownership for the next decade. Harrah's was renamed as Caesars Entertainment Corporation later in 2010. At the time, the Rio was valued at approximately $500 million. It included a casino with 1,100 slot machines and 90 table games, as well as of convention space. The Rio stayed competitive in the 2010s thanks to the World Series of Poker, as well as Caesars' database of 55 million rewards club members. Superkarts USA (SKUSA) also held its SuperNationals kart racing event at the Rio each year, taking place on a temporary circuit set up in the resort's parking lot. The Rio has also hosted a Star Trek convention every year since 2011. In addition, it hosted the DEF CON hacker convention from 2011 to 2014. A robbery occurred in 2011, with $33,200 in casino chips stolen. Two men were arrested in connection with the robbery, and a third was apprehended nine years later. In 2013, a norovirus outbreak occurred among 100 people staying at the Rio for a youth football tournament taking place in Las Vegas. On the evening of December 28, 2016, water from a clogged sink overflowed into an electrical conduit, in a service area of the Masquerade Tower. It caused a fuse to blow, cutting out power for 400 rooms located on the 22nd floor and onward. The blown fuse had also sparked a small fire in a service elevator, which was put out by sprinklers. However, the next morning, leftover sprinkler water trickled down and shorted out a fuse in the backup generator, which cut out power for another 500 rooms. Guests had to be evacuated to other hotels. Six guests received minor injuries during the evacuation. Power to the lower portion of the tower was restored within a day, and full power was gradually restored over the course