Between now and Opening Day, several minor league signees will win jobs with their clubs and earn 40-man roster spots. Here are today's additions: The Angels have purchased the contract of infielder Ian Stewart, Bill Shaikin of the Los Angeles Times tweets. The former top prospect, now 28, was brought in on a minor league contract in January. Ryan Rowland-Smith will make the Diamondbacks' Opening Day roster, GM Kevin Towers disclosed (via Steve Gilbert of MLB.com). Rowland-Smith was in camp on a minor league deal. The 31-year-old hasn't pitched in the majors since 2010 but was excellent last year for...

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