** Shares of casino operator Caesars Entertainment CZR.O rises 2.2% to $28.6 after the bell
** CZR posts Q1 net loss of $98 million, or 54 cents per share, vs loss of $142 million, or 73 cents per share, a year ago
** Reports Q1 revenue of $2.79 billion, compared with $2.74 billion a year ago
** CZR down 16.2% YTD
(Reporting by Juby Babu in Mexico City)
((Juby.Babu@thomsonreuters.com))