SURPRISE, Ariz. -- James Shields struck out 10 in six scoreless innings for Kansas City, but the Royals lost 6-5 to a split-squad of Chicago Cubs on Saturday.
Brett Jackson hit a three-run homer off Kansas City's Jon Rauch in the eighth, and then had a go-ahead, two-run single against Tim Collins in the ninth.
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Shields, who is slated to start on opening day, allowed an infield single and threw 49 strikes in 75 pitches.
Jeff Samardzija, who will start the Cubs' opener, gave up a home run to Jarrod Dyson on his third pitch. He was charged with four runs and seven hits in 3 2-3 innings.
Johnny Giavotella homered with Dyson aboard in the third. Giavotella drove in another run in the fourth with a sacrifice fly.