Darden Restaurants, Inc. (NYSE:DRI) shares tumbled nearly 10% Thursday after the Olive Garden parent posted weaker-than-expected quarterly earnings and revenue, overshadowing double-digit sales growth fueled by acquisitions and steady same-restaurant gains. The company reported first-quarter adjusted earnings per share of $1.97, missing the analyst consensus estimate of$2.00. Quarterly sales of $3.004 billion missed the Street view of$3.040 billion. Also Read: Darden Restaurants, Factset Research And 3 ...