NEW YORK, May 10 (Reuters) - * The Toronto Stock Exchange's S&P/TSX rose 48.69 points, or 0.31 percent, to 15,959.50. * The biggest contributor to the TSX gain was Enbridge, up 1.9 percent, to add 9.45 net index points after the pipeline company posted quarterly results and said it may sell more assets this year. Materials was the top sector contributor with a 15 net points boost.
* Leading the index were Great Canadian Gaming Corp, up 26.7 percent, Pan American Silver Corp, up 9.9 percent, and Stars Group Inc, higher by 9.5 percent. * Lagging shares were Cascades Inc, down 7.6 percent, Paramount Resources Ltd, down 7.4 percent, and Open Text Corp, lower by 6.3 percent. * On the TSX, 144 issues advanced and 100 declined as a 1.4-to-1 ratio favored advancers. There were 17 new highs and 4 new lows, with total volume of 224.5 million shares. * The most heavily traded shares by volume were Canadian Natural Resources Ltd, Baytex Energy Corp and Enbridge Inc. * The TSX's energy group rose 0.01 points, or 0.00 percent, while the financials sector climbed 0.75 points, or 0.25 percent. * West Texas Intermediate crude futures rose 0.35 percent, or $0.25, to $71.39 a barrel. Brent crude rose 0.27 percent, or $0.21, to $77.42 * The TSX is off 1.5 percent for the year. (Reporting by Chuck Mikolajczak)