I apologize for this delayed reply to your gardening question. The spring rush has brought a deluge of questions and we are working hard to catch up!
I don't know that there is much for you to do other than either leave the lawn as is and just mow and ignore it, or kill one part with a herbicide and replant it to match the other part. The grass you see on golf courses is bermuda, usually a semi dwarf variety such as Tif 419.
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!
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