There is a very comprehensive KC Royals page here -
Kansas City Royals History - 1977 Opening Day Roster/Transactions
It lists Lew Olsen, Dave Hasbach and Steve Patchin as September call-ups in 1977. Neither ever appeared in a MLB game and neither are listed in the current "Near Major Leaguers" list maintained at the SABR site. However, this appears to be an otherwise well-researched site (there's no apparent way to contact the manager). None of these guys are listed in the relevant Sporting News issues (though that doesn't necessarily guarantee anything). Any guesses as to whether any are actually Sharmans? Meantime, if anyone has an image of either Patchin or Olsen in Royals garb, it would be appreciated.