Kyle Franco throwing heat for Foothill HS against Cal HS.

APRIL 7, 2014 - Thunder Sox Baseball wants to remind both current and prospective players to contact us to come see you play this spring season. The coaching staff has been hard at work getting ready for the summer season, and we still have a few spots available. If you are interested in playing for the Thunder Sox this summer, send some information about yourself and your spring game schedule to Make it a great day!


Cody Bacho squaring one up.

March 1, 2014 - Here are a couple of updates from Thunder Sox Baseball...


T-Sox 12U competed in their first two tournaments the past couple weekends, and starts 680 League play next weekend against Orinda. The 12U will be playing three-game sets each weekend against teams in the 680 League.


HIGH SCHOOL PLAYERS: if you have played in our program in the past, let us know what your high school schedules look like in the spring so that the coaching staff can come see you play. We have not fully set our 2014 Summer rosters yet, so please be patient as we figure out how many roster spots we have available. You can contact Coach Lonsdale or Coach Gatehouse with any questions or to let us know what level you are playing at.


PROSPECTIVE PLAYERS: The same goes for you...drop Coach Lonsdale a line, and let him know what school team you play for this spring so we can come check you out.


Have a good one, all! Go T-Sox!


JANUARY 8, 2014 - Happy New Year from us at Thunder Sox Baseball Club! Here is a quick update as we head into the last few weeks of our winter program and into our spring season...


The High School-level Winter Program has been, in our eyes, a success. The players are getting conditioned and ready to go for school tryouts in February.


As the winter season has gone on, the coaches have also kept an eye towards the spring, as we will be running our first-ever 12U spring team. We are very excited to coach this group of kids, and we are confident that they will see huge improvements. The first practice of Spring will be held Friday, January 10 at 7:30 PM at TPC in Pleasanton. The 12U will be participating in their first spring tournament the weekend of February 22. Keep your eyes peeled for any schedule changes that may come!




DECEMBER 6, 2013 - Thunder Sox Baseball held their 12U meeting for the spring at Total Player Center (TPC) in Pleasanton on Thursday night. It was great to see all the kids and parents together for the first time! We with the T-Sox are very excited to enter a team into the highly competitive 680 League for the spring season. Rosters and other information for the 12U team will be posted in the coming weeks, so check back for details!


NOVEMBER 15, 2013 - The Thunder Sox are currently in the process of recruiting players for our 18U Connie Mack Team, 18U High School Don Mattingly team and 17U Mickey Mantle team this coming summer. We are also recruiting for 12U and 14U teams for spring, which we plan to continue into summer ball. 


Our 18U Connie Mack team will play in the Connie Mack league and compete against top competition in the Bay Area and beyond. In 2013, the T-Sox won the Select division regular season with a 12-2 record. The 18U High School team will play in the Don Mattingly division, and the 17U will play in the Mickey Mantle division. All teams will play a 35-40 game schedule with 2 practices a week and 3-4 tournaments. The home field for the teams will be Chabot College and Cal High School in San Ramon.


There are still some spots available, but teams are filling fast! If you are interested in playing with the Thunder Sox this summer please contact Coach Lonsdale at 510-909-6718 or email


NOVEMBER 19, 2013 - Here is a quick roundup, highlighting a few former Thunder Sox players who have either made news or are primed to make news. If you would like to be highlighted in this space, contact us at and let us know what you're doing!


The Thundersox are happy to announce that LHP Joey Lucchesi (2012) has signed a letter of intent to play for Southeast Missouri State beginning in 2015. The Chabot College lefty will pitch for the Gladiators this year as a sophomore. Lucchesi was the leader of our college team's pitching staff in 2012 and could be a draftable prospect with a big season this year.


CSUMB catcher Mikey Lonsdale is primed for a big senior season leading the Otters. A former All-American catcher at Chabot College, Lonsdale is being counted on to help lead the way to a repeat of the Otters' 2013 CCAA championship.


Former Livermore HS RHP Jackson Mancieri (T-Sox 2012-13) signed with Doane College (NE) following an outstanding 2013 summer season. Mancieri worked incredibly hard and was patient, waiting his turn to show what he could do. In the Firecracker Classic in Huntington Beach, Mancieri was dominant, shutting down a top Southern California team to the tune of 2 hits in 7 innings, allowing only one unearned run. He signed his letter of intent shortly after. The right-hander will be competing for innings for Doane this spring.


Please take time to check out all of our former players making a name for themselves in college and pro ball.


Cameron Self delivering a pitch.

As the 2013 fall season winds down, the 18U Thunder Sox will be heading to the University of Nevada at Reno over Veterans Day weekend to play a tournament for Division-1 level scouts and coaches. This will be an exciting event and a great opportunity for our players to compete.


Kyle Franco did it all!

JULY 1, 2013 - This past weekend the annual Bay Area World Series was held
at Santa Clara University. This event is an invite only, showcase style
tournament where the top 2014 graduates are invited. Over 150 players are
selected and separate into teams by region. Three of our Thunder Sox Players were invited; Kyle Franco (Foothill), Cameron Self (Livermore) and Francis Demartini (Monte Vista). While all three of our players had great weekends Kyle Franco was the standout of the whole tournament winning the MVP award. In the championship game Franco’s Contra Costa team defeated the South Bay team by a score of 4-0. In that game Franco hit a 3 run double and pitched a 1,2,3 inning on the mound touching 87 MPH numerous times. Franco has worked extremely hard and really grown as a player since joining the Thunder Sox. All of our coaches are proud of his growth and success he has found through all of his hard work.


The Bay Area World Series also holds an underclassman event for 2015 graduates at Cal Poly in July. Please look for Thunder Sox players
Thomas Triantos (Livermore) and Aaron Gaela (Dublin) in that event to have the same success as our 2014 grads did this past weekend.


T-SOX 12U:

Fri 4/11

Practice 7:00

TPC Pleasanton, 7073 Commerce Cir.


Sun 4/13

DH vs. Brentwood

Ernie Rodriguez Field @ Robertson Park

T-Sox Connie Mack

Stay tuned for summer!


T-Sox 18U

Stay tuned for summer!


T-Sox 17U

Stay tuned for summer!


Thunder Sox Baseball Club


Andrew Lonsdale (Owner/Manager)

Phone Number: (510) 909 - 6718


17915 Lamson Rd.

Castro Valley, CA 94546