Hoping to stay abreast of online rival Amazon.com Inc., three of the nation's biggest retail chains are announcing plans to introduce same-day delivery of certain items ordered online in Denver and other cities.

The chains are Best Buy Co. Inc., Macy's Inc. and PetSmart Inc. Both Best Buy and PetSmart are partnering with Menlo Park, California-based startup Deliv on the new same-day service.

Here's a roundup:

Best Buy

The chain will expand its same-day delivery service into over a dozen new cities in September, including Denver.

Starting Sept. 6, Best Buy's same-day delivery will be offered in the following cities: Austin, Charlotte, Cincinnati, Columbus, Denver, Kansas City, Minneapolis/St. Paul, Orlando, Phoenix, Pittsburgh, Sacramento, San Antonio, San Diego and Tampa.

Read more at the Denver Business Journal: http://bit.ly/2gspdVV