diff --git a/Betting Contract/README.md b/Betting Contract/README.md
index 3a78b59..42732c9 100644
--- a/Betting Contract/README.md	
+++ b/Betting Contract/README.md	
@@ -1,4 +1,6 @@
-# Betting Contract
+#Contributor: Martin Kim, Ryan Olsen
+
+#Betting Contract
 Build a simple betting contract that rewards correct guesses of outcomes. This contract utilizes aspects of game theory; you may want to use a paper and pen to make a note of possible game states that may arise.
 
 ## Rules
diff --git a/Betting Contract/contracts/betting.sol b/Betting Contract/contracts/betting.sol
index fb3bb1f..7813d2b 100644
--- a/Betting Contract/contracts/betting.sol	
+++ b/Betting Contract/contracts/betting.sol	
@@ -1,70 +1,136 @@
-pragma solidity 0.4.19;
-
+pragma solidity ^0.4.15;
 
 contract Betting {
-    /* Constructor function, where owner and outcomes are set */
-    function Betting(uint[] _outcomes) public {
-    }
-
-    /* Fallback function */
-    function() public payable {
-        revert();
-    }
-
-    /* Standard state variables */
-    address public owner;
-    address public gamblerA;
-    address public gamblerB;
-    address public oracle;
-
-    /* Structs are custom data structures with self-defined parameters */
-    struct Bet {
-        uint outcome;
-        uint amount;
-        bool initialized;
-    }
-
-    /* Keep track of every gambler's bet */
-    mapping (address => Bet) bets;
-    /* Keep track of every player's winnings (if any) */
-    mapping (address => uint) winnings;
-    /* Keep track of all outcomes (maps index to numerical outcome) */
-    mapping (uint => uint) public outcomes;
-
-    /* Add any events you think are necessary */
-    event BetMade(address gambler);
-    event BetClosed();
-
-    /* Uh Oh, what are these? */
-    modifier ownerOnly() {_;}
-    modifier oracleOnly() {_;}
-    modifier outcomeExists(uint outcome) {_;}
-
-    /* Owner chooses their trusted Oracle */
-    function chooseOracle(address _oracle) public ownerOnly() returns (address) {
-    }
-
-    /* Gamblers place their bets, preferably after calling checkOutcomes */
-    function makeBet(uint _outcome) public payable returns (bool) {
-    }
-
-    /* The oracle chooses which outcome wins */
-    function makeDecision(uint _outcome) public oracleOnly() outcomeExists(_outcome) {
-    }
-
-    /* Allow anyone to withdraw their winnings safely (if they have enough) */
-    function withdraw(uint withdrawAmount) public returns (uint) {
-    }
-    
-    /* Allow anyone to check the outcomes they can bet on */
-    function checkOutcomes(uint outcome) public view returns (uint) {
-    }
-    
-    /* Allow anyone to check if they won any bets */
-    function checkWinnings() public view returns(uint) {
-    }
-
-    /* Call delete() to reset certain state variables. Which ones? That's upto you to decide */
-    function contractReset() public ownerOnly() {
-    }
+	/* Standard state variables */
+	address public owner;
+	address public gamblerA;
+	address public gamblerB;
+	address public oracle;
+
+	/* Structs are custom data structures with self-defined parameters */
+	struct Bet {
+		uint outcome;
+		uint amount;
+		bool initialized;
+	}
+
+	/* Keep track of every gambler's bet */
+	mapping (address => Bet) bets;
+	/* Keep track of every player's winnings (if any) */
+	mapping (address => uint) winnings;
+	/* Keep track of all outcomes (maps index to numerical outcome) */
+	mapping (uint => uint) public outcomes;
+
+	/* Add any events you think are necessary */
+	event BetMade(address gambler);
+	event BetClosed();
+
+	/* Uh Oh, what are these? */
+	modifier OwnerOnly() {
+		if (msg.sender == owner) {
+			_;
+		}
+	}
+
+	modifier OracleOnly() {
+		if (msg.sender == owner) {
+			_;
+		}
+	}
+
+	modifier OutcomeExists(uint outcome) {
+		if (outcomes[outcome] != 0) {
+			_;
+		}
+	}
+
+	/* Constructor function, where owner and outcomes are set */
+	function Betting(uint[] _outcomes) {
+		owner = msg.sender;
+		for (uint i = 0; i < _outcomes.length; i++) {
+			outcomes[i] = _outcomes[i];
+		}
+	}
+
+	/* Owner chooses their trusted Oracle */
+	function chooseOracle(address _oracle) OwnerOnly() returns (address) {
+		if (_oracle != gamblerA && _oracle != gamblerB) {
+			oracle = _oracle;
+		}
+		return oracle;
+	}
+
+
+	/* Gamblers place their bets, preferably after calling checkOutcomes */
+	function makeBet(uint _outcome) payable returns (bool) {
+		if (!bets[msg.sender].initialized && msg.sender != oracle) {    //making sure that oracle isn't one of Player A or B
+			BetMade(msg.sender);
+			if (gamblerA == 0) {
+				gamblerA = msg.sender;
+				return true;
+			} else if (gamblerB == 0 && msg.sender != gamblerA) {
+				gamblerB == msg.sender;
+				BetClosed();
+				bets[msg.sender] = Bet({
+				outcome: _outcome,
+				amount: msg.value,
+				initialized: true
+				});
+				return true;
+			}
+		}
+		return false;
+	}
+
+	/* The oracle chooses which outcome wins */
+	function makeDecision(uint _outcome) OracleOnly() OutcomeExists(_outcome) {
+		Bet storage gA = bets[gamblerA];
+		Bet storage gB = bets[gamblerB];
+		if (gA.outcome == gB.outcome) {
+			winnings[gamblerA] = gA.amount;
+			winnings[gamblerB] = gB.amount;
+		} else if (gA.outcome == _outcome && gB.outcome != _outcome) {
+			winnings[gamblerA] = gA.amount + gB.amount;
+		} else if (gA.outcome != _outcome && gB.outcome == _outcome) {
+			winnings[gamblerB] = gA.amount + gB.amount;
+		} else {
+			winnings[oracle] = gA.amount + gB.amount;
+		}
+		contractReset();
+	}
+
+	/* Allow anyone to withdraw their winnings safely (if they have enough) */
+	function withdraw(uint withdrawAmount) returns (uint) {
+		if(winnings[msg.sender] >= withdrawAmount) {
+			winnings[msg.sender] -= withdrawAmount;
+			bool sent = msg.sender.send(withdrawAmount);
+            if (!sent) {
+				winnings[msg.sender] += withdrawAmount;
+			}
+		}
+		return winnings[msg.sender];
+	}
+
+	/* Allow anyone to check the outcomes they can bet on */
+	function checkOutcomes(uint outcome) constant returns (uint) {
+		return outcomes[outcome];
+	}
+
+	/* Allow anyone to check if they won any bets */
+	function checkWinnings() constant returns(uint) {
+		return winnings[msg.sender];
+	}
+
+	/* Call delete() to reset certain state variables. Which ones? That's upto you to decide */
+	function contractReset() private {
+		delete(bets[gamblerA]);
+		delete(bets[gamblerB]);
+		delete(gamblerA);
+		delete(gamblerB);
+	}
+
+	/* Fallback function */
+	function() payable {
+		revert();
+	}
 }