Sentence:  <WSD>Rookie</WSD> southpaw George Stepanovich relieved Hyde at the start of the ninth and gave up the A 's fifth tally on a walk to second baseman Dick Howser , a wild pitch , and Frank Cipriani 's single under Shortstop Jerry Adair 's glove into center . 
Meaning of the word marked with <WSD> tags:  an awkward and inexperienced youth