on3's MLB 2026 Opening Day System

TrojanMan8 · 2026-03-26T15:39:03+00:00

Explanation of the system summarized from last year's thread:

Regular System:

3- or 4-game series (only first 3 games are played)
First game has a home favorite above -145
Odds above -190 are played on the runline instead

Filtered System:

Same criteria as the regular system, AND:
First game total over 9

5/2 System:

Same criteria as the filtered system
Series starts on the B bet after the A bet loses
B bet to win 5 units and C bet to win back lost B bet plus 2 units

The Regular and Filtered systems are played using labby lines. The 5/2 system is played separately.

The labby lines are used for a combination of Regular and Filtered plays. Filtered plays are also Regular plays, so the system effectively plays them twice with the labby. (The 5/2 are Filtered plays that lost the A bet, so you would technically be playing the B and C bets of the Filtered plays 3 times if playing the 5/2 and the labby lines).

The labby lines need two numbers for each play. Tracking for this system uses 10s when adding new numbers to the line and 20 is treated as 1U (2x10), but your units may vary. A win eliminates two numbers from the labby line and a loss is added as a new number to the labby line. New numbers (10) are added as needed for new plays or to spread risk. It may be easiest to consider all plays as 1 total labby line as opposed to having separate labby lines for A, B, and C bets.

Using opening day as an example, there were 3 regular plays so the system started with 6 10s.
10 10 10 10 10 10

SEA and LAD won, while KC lost, so 4 numbers are eliminated and the KC loss (31.60 at -158 odds) is added to the line.
10 10 10 10 10 10 31.60

At the end of the day, there were 3 numbers left on the line: 10 10 31.60. The day 2 line (post #13) shows there were 5 total numbers; 3 on the A bet and 2 on the B bet. This means that 2 10s were then added to the lines, giving:
10 10 31.60 10 10

To spread risk, the numbers are averaged. The total line is 71.60 (4x10 + 31.60) divided by the 5 numbers, giving a new line of 5 x 14.32. Day 2 shows an A bet and a B bet and numbers are moved between the A, B, and C lines as needed. Therefore, 2 numbers are shown on the B line and 3 were left on the A line, giving:
Labby Line (20$ = 1unit)
(A) 3 * 14.32
(B) 2 * 14.32
(C)

For the next play, the numbers are rounded up to the next tenth for the next play, so TB is at 1.44U = 14.40 x 2 = 28.80. TB lost the run line last night, so 28.80 will now be added to the line.
14.32 14.32 14.32 14.32 14.32 28.80.

To summarize the lines above:
Day 1 before games: 10 10 10 10 10 10
Day 1 after games (2W, 1L, 2 numbers added): 10 10 31.60 10 10
Day 2 before games (Day 1 after line averaged): 14.32 14.32 14.32 14.32 14.32
Day 2 after games (1L): 14.32 14.32 14.32 14.32 14.32 28.80

TrojanMan8 · 2026-03-26T15:48:14+00:00

UPDATED for 03/26/2026

System(s) record Chase :

Regular system: 0-0; Profit: 0 units
Filtered System: 0-0; Profit: 0 units
5/2 chase: 0-0; profit: 0 units

Total (3 systems) : 0-0; Profit: 0 unit (Series chase lost : )

Records: (regular, filtered, 5/2)

Game 1 (A) win = 0-0; 0-0; 0-0
Game 2 (B) win = 0-0; 0-0; 0-0
Game 3 (C) win = 0-0; 0-0

Labby Line ($20 = 1unit)
(A) 10-10-10-10 (10x16 total)
(B)
(C)

REGULAR FOR 03/26/2026

(A) BAL ML -145 to win 1U
(A) CHC RL -102 to win 1U
(A) HOU ML -186 to win 1U
(A) LAD RL -131 to win 1U
(A) MIL RL +113 to win 1U
(A) PHI ML -163 to win 1U
(A) SEA RL +123 to win 1U

Close play (ML vs no play)
Close play (RL vs ML)

Filtered
(A) LAD RL -131 to win 1U

5/2
No Play

TrojanMan8 · 2026-03-26T15:49:35+00:00

One other note. I think grecycle used a specific book to track. I remember not having access to that book, so I'm using scores and odds.