GIRL SOUTHPAWJackie Mitchell, above, la the first girl to sign up as a regular league ball player. She's 17, and Manager Joe Engel, who signed her for the Chattanooga. Tenn„ Southern league club, says the has real ability. She’s to pitch against Babe Ruth and the rest of the slugging New York Yankees tomorrow.SET TO OPPOSECHATTANOOGA, Tenn., March 31.—(UP)—Jackie Mitchell. 17-yenr-old girl pitcher tor the Chattanooga Lookouts. Southern association club, trained under cover” today for her pitching debut against the New York Yankees tomorrow.Miss Mitchell was getting her rugged left arm in condition for J realization of her life ambition— to fan Babe Ruth—in her own back yard. An accommodating neighbor boy served aa catcher for the 130-pound pitcher.She will be kept out of sight until time to face the Yankees, Joe Engel, president of the Lookouts. said. In a radio talk last night Engel expressed confidence Miss Mitchell will fool the Yankees and that Lookout outfielders will have little to do.The impression prevailed here today that regardless of the outcome of the Mltcheil-Ruth encounter, Engel will accomplish one very tangible result—fill Engel park to the stadium roof.