Due to a combination of poor planning on my end and some snafus with data we are provided with, Baseball-Reference will begin updating daily with the Marlins/Cardinals tilt on April 4th.
Updating the site for a new season is always a harrowing experience given the multitude of interconnected moving parts. We are continually simplifying the process, but between the SABR Conference two weeks ago, the NLB launch, a couple of new servers we have coming online and my dawdling we aren't going to be ready to update the Mariners and A's games this week. I apologize to our users who want to see that data ASAP, but we'll make sure we are ready to go next week.
Thank you for your patience.