Brother of former MLB pitcher Tyler Walker missing along with other family members following Texas floods

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Several family members of former MLB relief pitcher Tyler Walker remain missing on Tuesday as the death toll surpassed 100 following the devastating flooding that took place in central Texas over the Fourth of July weekend. 

Mark Walker, 51, his wife Sara, 50, and their 14-year-old son, Johnny, have been reported missing after vacationing at a river house in Hunt, Texas, along the Guadalupe River, which was devastated by the Kerr County flood on Friday, the San Francisco Chronicle reported, citing family.

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Tyler Walker of the San Francisco Giants pitches during the game against the Los Angeles Dodgers at AT&T Park in San Francisco, California on Sept. 9, 2007.  (Brad Mangin/MLB via Getty Images)

Mark is the older brother of former San Francisco Giants reliever Tyler Walker. 

"I’m sick to my stomach," Kathy Walker, the mother of Mark and Tyler, told the outlet. "It’s a terrible feeling, because you’re helpless here." 

Kathy told the San Francisco Chronicle that she last spoke to Mark on Thursday. The couple’s 16-year-old daughter, Ellie, was attending camp at Camp Waldemar and has since been found safe. 

According to the report, Tyler and his wife traveled to Texas to be with their niece.

San Francisco Giants relief pitcher Tyler Walker walks off of the field after getting the final out of the eighth inning against the Chicago Cubs at Wrigley Field on July 11, 2008. (Jerry Lai/USA TODAY Sports)

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Tyler Walker played eight seasons in the major leagues, spending the majority of