The other day, I listened via tropo enchanement (between the storms) and heard Clark Howard on 98.9. I'm not surprised about the flip of formats on 98.9, it seems that frequency has been snake bit for years.
Over in Central Arkansas, KABZ 103.7 (ex KKYK, KSYG) flipped to conventional political talk in 1995. Although the station had Imus (during his prime in syndication), "Dr" Laura, it could never get over the hump ratings wise. They did have a 3 hour sports show (which carried over from the former 1010AM, the now gone KLRA) which continues to this day. The station revamped to a entertainment talk format in 2000 and dumped the D-list conservative talk on weekneds (replacing with modern rock) and brought in Pat Lynch, the center-left host whom pwned what KSYG-FM (at that time) after his firing from rival KARN-AM. Still even with the "hot" talk, including a run of Phil Hendrie on weeknights, the station decided to go Sportstalk fulltime in 2004 with Fox Sports Radio (replaced with ESPN Radio in 2009) overnights and weekends and a heavy local lineup, although most sports talk tended to be "pork" flavored.
KARN-AM (of which was the primary competition for KSYG-now KABZ) had FM on a couple of rimshot smaller signals in 1995, but got serious and flipped a station on 102.9 which was doing country for a couple of years to simulcast the AM in 2004. In 2009, KARN dropped the AM signal from the talk format and went 100% FM (the AM signal on 920 went to mostly syndicated sports talk and replaced KABZ as the Fox Sports Radio affiliate). KARN had Lynch until 2000 (as mentioned earlier) plus currently carries Limbaugh (since 1991), Hannity, and Beck.
I'm not sure that without a marquee name/host, that 98.9 will make a big impact in Memphis and the suburbs.