NEW YORK – Target Corp. is pledging to match prices of select online rivals year-round, a move that underscores how physical and online retailing are being meshed together.

Matching online prices is rare but expected to become more common as shoppers move increasingly online. Target, the nation's second largest discounter behind Wal-Mart Stores Inc., said it will match prices that customers find on identical products at top online retailers, all the time. The online list includes Amazon.com as well as the websites of Wal-Mart, Best Buy, Toys R Us and Babies R Us.

Target's move follows a similar holiday price match that began Nov. 1 and ended Dec. 16. Target is also making permanent its holiday offer of matching prices of items found at its stores with those on its website. And for the first time it will include products that are out of stock on Target.com.