* TSX up 147.24 pts, or 1.3 pct, at 11,639.75 * Resource, financial shares lead gains * ECB comments ease euro zone fears * Barrick falls more than 4 pct after earnings By Jon Cook TORONTO, July 26 (Reuters) - Canadian stocks had their biggest single-day gain in more than three weeks on Thursday, led by financial and resource shares, as European Central Bank President Mario Draghi's pledge to protect the euro zone from collapse sparked a commodities rally. Global stocks