TORONTO, July 13 (Reuters) - Toronto's main stock index opened flat on Monday as a slide in oil and commodity prices weighed on the resource-heavy index and more than offset the boost offered by a rise in financial shares.
The S&P/TSX composite index .GSPTSE was down 2.84 points at 9,744.29 at the open. Four of the TSX's 10 sectors were lower, led by a 1.2 percent drop in the mining-laden materials group and a 0.85 percent skid in the energy sector.
The financial group, which accounts for about 30 percent of the TSX, was up 0.59 percent. (Reporting by Frank Pingue; editing by Peter Galloway)