Third-place Rangers stretch for positivity, are we underrating Micah Parsons, a warning for Mavs fans from Dirk Nowitzki, and hype over phones and grocery stores, all in this week’s DFW sports notebook. WHITT’S END 9.23.22: Whether you’re at the end of your coffee, your day, your week or even your rope, welcome to Whitt’s End … *Don’t ask why, but I tuned in briefly to Texas Rangers-Anaheim Angels Wednesday night. Saw what I thought was a cool stat, that quickly deteriorated into an epic reach. The graphic on Bally Sports Southwest blared “Nate Lowe has the highest batting average ……